diff --git a/chain/src/chain.rs b/chain/src/chain.rs
index 9ccf886e66..4b72772df0 100644
--- a/chain/src/chain.rs
+++ b/chain/src/chain.rs
@@ -1527,9 +1527,6 @@ impl BlockChain {
 
         let mut new_tips = vec![];
         for hash in tips {
-            if !self.has_dag_block(hash)? {
-                continue;
-            }
             if !dag.check_ancestor_of(hash, new_tip_block.id())? {
                 new_tips.push(hash);
             }