diff --git a/core/chain_manager.go b/core/chain_manager.go
index 9ef091c3c..38d1d64b4 100644
--- a/core/chain_manager.go
+++ b/core/chain_manager.go
@@ -268,7 +268,6 @@ func (self *ChainManager) GetBlockHashesFromHash(hash []byte, max uint64) (chain
 			break
 		}
 	}
-	fmt.Printf("get hash %x (%d)\n", hash, len(chain))
 
 	return
 }