diff --git a/src/sf_define.h b/src/sf_define.h
index 7cb5d17..7ca2d94 100644
--- a/src/sf_define.h
+++ b/src/sf_define.h
@@ -45,6 +45,7 @@
 #define SF_NIO_TASK_STAGE_FETCH(task)  task->nio_stages.current
 
 #define SF_SESSION_ERROR_NOT_EXIST           9992
+#define SF_CLUSTER_ERROR_NOT_LEADER          9996
 #define SF_CLUSTER_ERROR_LEADER_VERSION_INCONSISTENT 9997
 #define SF_CLUSTER_ERROR_BINLOG_INCONSISTENT 9998
 #define SF_CLUSTER_ERROR_LEADER_INCONSISTENT 9999