diff --git a/core/block_processor.go b/core/block_processor.go
index 4d93fcead..6224d7c59 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -271,7 +271,7 @@ func (sm *BlockProcessor) AccumelateRewards(statedb *state.StateDB, block, paren
 	reward := new(big.Int).Set(BlockReward)
 
 	ancestors := set.New()
-	for _, ancestor := range sm.bc.GetAncestors(block, 6) {
+	for _, ancestor := range sm.bc.GetAncestors(block, 7) {
 		ancestors.Add(string(ancestor.Hash()))
 	}
 
diff --git a/core/state_transition.go b/core/state_transition.go
index b22c5bf21..8b0ca2ac4 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -192,8 +192,7 @@ func (self *StateTransition) TransitionState() (ret []byte, err error) {
 		if err == nil {
 			dataGas := big.NewInt(int64(len(ret)))
 			dataGas.Mul(dataGas, vm.GasCreateByte)
-			if err = self.UseGas(dataGas); err == nil {
-				//self.state.SetCode(ref.Address(), ret)
+			if err := self.UseGas(dataGas); err == nil {
 				ref.SetCode(ret)
 			}
 		}
diff --git a/tests/vm/gh_test.go b/tests/vm/gh_test.go
index 7b41411de..e1fdcd658 100644
--- a/tests/vm/gh_test.go
+++ b/tests/vm/gh_test.go
@@ -79,7 +79,6 @@ func RunVmTest(p string, t *testing.T) {
 	helper.CreateFileTests(t, p, &tests)
 
 	for name, test := range tests {
-		//helper.Log.Infoln("Running", name)
 		db, _ := ethdb.NewMemDatabase()
 		statedb := state.New(nil, db)
 		for addr, account := range test.Pre {
diff --git a/vm/vm_debug.go b/vm/vm_debug.go
index 255faefb0..5949ea5d9 100644
--- a/vm/vm_debug.go
+++ b/vm/vm_debug.go
@@ -663,8 +663,8 @@ func (self *DebugVm) Run(me, caller ContextRef, code []byte, value, gas, price *
 
 			context.UseGas(context.Gas)
 
-			ret, err, ref := self.env.Create(context, addr, input, gas, price, value)
-			if err != nil {
+			ret, suberr, ref := self.env.Create(context, addr, input, gas, price, value)
+			if suberr != nil {
 				stack.Push(ethutil.BigFalse)
 
 				self.Printf("CREATE err %v", err)