diff --git a/core/tx_pool.go b/core/tx_pool.go
index 767c7c901f..f6565bddf0 100644
--- a/core/tx_pool.go
+++ b/core/tx_pool.go
@@ -152,7 +152,6 @@ const (
 	TxStatusUnknown TxStatus = iota
 	TxStatusQueued
 	TxStatusPending
-	TxStatusIncluded
 )
 
 // blockChain provides the state of blockchain and current gas limit to do