diff --git a/genesis.cpp b/genesis.cpp
index 5f17d2762..16ffb1859 100644
--- a/genesis.cpp
+++ b/genesis.cpp
@@ -35,9 +35,20 @@ namespace js = json_spirit;
 
 BOOST_AUTO_TEST_CASE(genesis_tests)
 {
+	const char* ptestPath = getenv("ETHEREUM_TEST_PATH");
+	string testPath;
+
+	if (ptestPath == NULL)
+	{
+		cnote << " could not find environment variable ETHEREUM_TEST_PATH \n";
+		testPath = "../../../tests";
+	}
+	else
+		testPath = ptestPath;
+
 	cnote << "Testing Genesis block...";
 	js::mValue v;
-	string s = asString(contents("../../../tests/genesishashestest.json"));
+	string s = asString(contents(testPath + "/genesishashestest.json"));
 	BOOST_REQUIRE_MESSAGE(s.length() > 0, "Contents of 'genesishashestest.json' is empty. Have you cloned the 'tests' repo branch develop?");
 	js::read_string(s, v);
 
diff --git a/hexPrefix.cpp b/hexPrefix.cpp
index fb2fbc826..99207ab97 100644
--- a/hexPrefix.cpp
+++ b/hexPrefix.cpp
@@ -33,9 +33,20 @@ namespace js = json_spirit;
 
 BOOST_AUTO_TEST_CASE(hexPrefix_test)
 {
+	const char* ptestPath = getenv("ETHEREUM_TEST_PATH");
+	string testPath;
+
+	if (ptestPath == NULL)
+	{
+		cnote << " could not find environment variable ETHEREUM_TEST_PATH \n";
+		testPath = "../../../tests";
+	}
+	else
+		testPath = ptestPath;
+
 	cnote << "Testing Hex-Prefix-Encode...";
 	js::mValue v;
-	string s = asString(contents("../../../tests/hexencodetest.json"));
+	string s = asString(contents(testPath + "/hexencodetest.json"));
 	BOOST_REQUIRE_MESSAGE(s.length() > 0, "Content from 'hexencodetest.json' is empty. Have you cloned the 'tests' repo branch develop?");
 	js::read_string(s, v);
 	for (auto& i: v.get_obj())
diff --git a/rlp.cpp b/rlp.cpp
index 69360ad66..608a8499e 100644
--- a/rlp.cpp
+++ b/rlp.cpp
@@ -61,7 +61,18 @@ namespace dev
 
 		static void getRLPTestCases(js::mValue& v)
 		{
-			string s = asString(contents("../../../tests/rlptest.json"));
+			const char* ptestPath = getenv("ETHEREUM_TEST_PATH");
+			string testPath;
+
+			if (ptestPath == NULL)
+			{
+				cnote << " could not find environment variable ETHEREUM_TEST_PATH \n";
+				testPath = "../../../tests";
+			}
+			else
+				testPath = ptestPath;
+
+			string s = asString(contents(testPath + "/rlptest.json"));
 			BOOST_REQUIRE_MESSAGE( s.length() > 0, 
 				"Contents of 'rlptest.json' is empty. Have you cloned the 'tests' repo branch develop?"); 
 			js::read_string(s, v);
diff --git a/trie.cpp b/trie.cpp
index 899eb1f60..f8ebd10c8 100644
--- a/trie.cpp
+++ b/trie.cpp
@@ -49,9 +49,20 @@ static unsigned fac(unsigned _i)
 
 BOOST_AUTO_TEST_CASE(trie_tests)
 {
+	const char* ptestPath = getenv("ETHEREUM_TEST_PATH");
+	string testPath;
+
+	if (ptestPath == NULL)
+	{
+		cnote << " could not find environment variable ETHEREUM_TEST_PATH \n";
+		testPath = "../../../tests";
+	}
+	else
+		testPath = ptestPath;
+
 	cnote << "Testing Trie...";
 	js::mValue v;
-	string s = asString(contents("../../../tests/trietest.json"));
+	string s = asString(contents(testPath + "/trietest.json"));
 	BOOST_REQUIRE_MESSAGE(s.length() > 0, "Contents of 'trietest.json' is empty. Have you cloned the 'tests' repo branch develop?");
 	js::read_string(s, v);
 	for (auto& i: v.get_obj())