diff --git a/core/blockchain.go b/core/blockchain.go
index 63f60ca280..d20b3c4fa9 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -697,7 +697,7 @@ func (bc *BlockChain) procFutureBlocks() {
 
 		// Insert one by one as chain insertion needs contiguous ancestry between blocks
 		for i := range blocks {
-			bc.InsertChain(blocks[i : i+1])
+			bc.InsertChain(blocks[i])
 		}
 	}
 }