diff --git a/core/blocks.go b/core/blocks.go
index 18eb327ca5..4755d5ae0c 100644
--- a/core/blocks.go
+++ b/core/blocks.go
@@ -19,4 +19,6 @@ package core
 import "github.com/ubiq/go-ubiq/common"
 
 // BadHashes represent a set of manually tracked bad hashes (usually hard forks)
-var BadHashes = map[common.Hash]bool{}
+var BadHashes = map[common.Hash]bool{
+	common.HexToHash("0x1ae014496c597f255ab617396b390761146c69dd3caa76c8cad11bc1eaefe2af"): true,
+}