diff --git a/execution_chain/core/chain/forked_chain.nim b/execution_chain/core/chain/forked_chain.nim
index 4d535cbdf2..c036359506 100644
--- a/execution_chain/core/chain/forked_chain.nim
+++ b/execution_chain/core/chain/forked_chain.nim
@@ -396,8 +396,8 @@ proc queueUpdateBase(c: ForkedChainRef, base: BlockRef)
 
   var
     number = base.number - min(base.number, PersistBatchSize)
-    steps  = newSeqOfCap[BlockRef]((base.number-c.base.number) div PersistBatchSize + 1)
-    it = prevQueuedBase
+    steps  = newSeqOfCap[BlockRef]((base.number - prevQueuedBase.number) div PersistBatchSize + 1)
+    it = base
 
   steps.add base