diff --git a/core/chain/types.go b/core/chain/types.go
index 24838ef..4428775 100644
--- a/core/chain/types.go
+++ b/core/chain/types.go
@@ -70,7 +70,7 @@ const (
 	TX_FILEBANK_DELBUCKET    = FILEBANK + DOT + "delete_bucket"
 	TX_FILEBANK_DELFILE      = FILEBANK + DOT + "delete_file"
 	TX_FILEBANK_UPLOADDEC    = FILEBANK + DOT + "upload_declaration"
-	TX_FILEBANK_ADDIDLESPACE = FILEBANK + DOT + "testAddIdleSpace"
+	TX_FILEBANK_ADDIDLESPACE = FILEBANK + DOT + "test_add_idle_space"
 )
 
 const (