diff --git a/core/vm/runtime/runtime_test.go b/core/vm/runtime/runtime_test.go
index a3bee2c311..b0b72e6f54 100644
--- a/core/vm/runtime/runtime_test.go
+++ b/core/vm/runtime/runtime_test.go
@@ -258,8 +258,6 @@ func (d *dummyChain) GetHeader(h common.Hash, n uint64) *types.Header {
 	return fakeHeader(n, parentHash)
 }
 
-func (d *dummyChain) Config() *params.ChainConfig { return params.TestChainConfig }
-
 // TestBlockhash tests the blockhash operation. It's a bit special, since it internally
 // requires access to a chain reader.
 func TestBlockhash(t *testing.T) {