diff --git a/bcUncleTestFiller.json b/bcUncleTestFiller.json
index 5fb466967..d96d5ee15 100644
--- a/bcUncleTestFiller.json
+++ b/bcUncleTestFiller.json
@@ -504,7 +504,878 @@
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+                        "difficulty" : "131072",
+                        "extraData" : "0x",
+                        "gasLimit" : "99902343",
+                        "gasUsed" : "0",
+                        "hash" : "9de9879b6a81d1b6c4993c63c90a3c9d1e775f14572694778e828bc64972ae04",
+                        "mixHash" : "b557f905d29ed0fca99d65d0adcce698dee97cf72a13c7cd8d7a7826b8eee770",
+                        "nonce" : "18a524c1790fa83b",
+                        "number" : "2",
+                        "parentHash" : "6134fc6b5d99ee03c4aab1592640f6f9dcbc850668d75d631aee34989b938fae",
+                        "receiptTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "stateRoot" : "ff640b30d613c35dad43e3693329e1b1ee6350f989cf46a288025a1cbfdab9cd",
+                        "timestamp" : "0x54c98c82",
+                        "transactionsTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                    }
+                ]
+            }
+        ]
+    },
+
+    "oneUncleGeneration6" : {
+        "genesisBlockHeader" : {
+            "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+            "coinbase" : "0x8888f1f195afa192cfee860698584c030f4c9db1",
+            "difficulty" : "131072",
+            "extraData" : "0x42",
+            "gasLimit" : "100000000",
+            "gasUsed" : "0",
+            "number" : "0",
+            "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
+            "receiptTrie" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "stateRoot" : "0xf99eb1626cfa6db435c0836235942d7ccaa935f1ae247d3f1c21e495685f903a",
+            "timestamp" : "0x54c98c81",
+            "mixHash" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "nonce" : "0x0102030405060708",
+            "transactionsTrie" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "uncleHash" : "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "10000000000000",
+                "nonce" : "0",
+                "code" : "",
+                "storage": {}
+            }
+        },
+        "blocks" : [
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "0",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "1",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "2",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "3",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "4",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "5",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "6",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "7",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                    {
+                        "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                        "coinbase" : "0000000000000000000000000000000000000000",
+                        "difficulty" : "131072",
+                        "extraData" : "0x",
+                        "gasLimit" : "99902343",
+                        "gasUsed" : "0",
+                        "hash" : "9de9879b6a81d1b6c4993c63c90a3c9d1e775f14572694778e828bc64972ae04",
+                        "mixHash" : "b557f905d29ed0fca99d65d0adcce698dee97cf72a13c7cd8d7a7826b8eee770",
+                        "nonce" : "18a524c1790fa83b",
+                        "number" : "2",
+                        "parentHash" : "6134fc6b5d99ee03c4aab1592640f6f9dcbc850668d75d631aee34989b938fae",
+                        "receiptTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "stateRoot" : "ff640b30d613c35dad43e3693329e1b1ee6350f989cf46a288025a1cbfdab9cd",
+                        "timestamp" : "0x54c98c82",
+                        "transactionsTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                    }
+                ]
+            }
+        ]
+    },
+
+    "oneUncleGeneration7" : {
+        "genesisBlockHeader" : {
+            "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+            "coinbase" : "0x8888f1f195afa192cfee860698584c030f4c9db1",
+            "difficulty" : "131072",
+            "extraData" : "0x42",
+            "gasLimit" : "100000000",
+            "gasUsed" : "0",
+            "number" : "0",
+            "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
+            "receiptTrie" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "stateRoot" : "0xf99eb1626cfa6db435c0836235942d7ccaa935f1ae247d3f1c21e495685f903a",
+            "timestamp" : "0x54c98c81",
+            "mixHash" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "nonce" : "0x0102030405060708",
+            "transactionsTrie" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "uncleHash" : "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "10000000000000",
+                "nonce" : "0",
+                "code" : "",
+                "storage": {}
+            }
+        },
+        "blocks" : [
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "0",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "1",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "2",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "3",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "4",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "5",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "6",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "7",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "transactions" : [
+                    {
+                        "data" : "",
+                        "gasLimit" : "80000050",
+                        "gasPrice" : "1",
+                        "nonce" : "8",
+                        "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "value" : "10"
+                    }
+                ],
+                "uncleHeaders" : [
+                    {
+                        "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                        "coinbase" : "0000000000000000000000000000000000000000",
+                        "difficulty" : "131072",
+                        "extraData" : "0x",
+                        "gasLimit" : "99902343",
+                        "gasUsed" : "0",
+                        "hash" : "9de9879b6a81d1b6c4993c63c90a3c9d1e775f14572694778e828bc64972ae04",
+                        "mixHash" : "b557f905d29ed0fca99d65d0adcce698dee97cf72a13c7cd8d7a7826b8eee770",
+                        "nonce" : "18a524c1790fa83b",
+                        "number" : "2",
+                        "parentHash" : "6134fc6b5d99ee03c4aab1592640f6f9dcbc850668d75d631aee34989b938fae",
+                        "receiptTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "stateRoot" : "ff640b30d613c35dad43e3693329e1b1ee6350f989cf46a288025a1cbfdab9cd",
+                        "timestamp" : "0x54c98c82",
+                        "transactionsTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                    }
+                ]
+            }
+        ]
     }
-
-
 }
diff --git a/blockchain.cpp b/blockchain.cpp
index ac872c0f3..08c6328f8 100644
--- a/blockchain.cpp
+++ b/blockchain.cpp
@@ -119,7 +119,12 @@ void doBlockchainTests(json_spirit::mValue& _v, bool _fillin)
 					// make uncle header valid
 					uncleBlockFromFields.timestamp = (u256)time(0);
 					if (vBiBlocks.size() > 2)
-						uncleBlockFromFields.populateFromParent(vBiBlocks[vBiBlocks.size()-2]);
+					{
+						if (uncleBlockFromFields.number - 1 < vBiBlocks.size())
+							uncleBlockFromFields.populateFromParent(vBiBlocks[(size_t)uncleBlockFromFields.number - 1]);
+						else
+							uncleBlockFromFields.populateFromParent(vBiBlocks[vBiBlocks.size() - 2]);
+					}
 					else
 						continue;