diff --git a/tests/block_test_util.go b/tests/block_test_util.go
index 526f0b7c71..6d9e8c808c 100644
--- a/tests/block_test_util.go
+++ b/tests/block_test_util.go
@@ -162,9 +162,9 @@ func (t *BlockTest) Run(snapshotter bool, scheme string, tracer vm.EVMLogger, po
 	}
 	// Import succeeded: regardless of whether the _test_ succeeds or not, schedule
 	// the post-check to run
-	defer func() {
-		postCheck(result, chain)
-	}()
+	if postCheck != nil {
+		defer postCheck(result, chain)
+	}
 	cmlast := chain.CurrentBlock().Hash()
 	if common.Hash(t.json.BestBlock) != cmlast {
 		return fmt.Errorf("last block hash validation mismatch: want: %x, have: %x", t.json.BestBlock, cmlast)