diff --git a/src/sf_define.h b/src/sf_define.h
index 7ca2d94..c823634 100644
--- a/src/sf_define.h
+++ b/src/sf_define.h
@@ -45,8 +45,9 @@
 #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_NOT_LEADER          9995
+#define SF_CLUSTER_ERROR_LEADER_VERSION_INCONSISTENT 9996
+#define SF_CLUSTER_ERROR_BINLOG_MISSED       9997
 #define SF_CLUSTER_ERROR_BINLOG_INCONSISTENT 9998
 #define SF_CLUSTER_ERROR_LEADER_INCONSISTENT 9999
 #define SF_CLUSTER_ERROR_MASTER_INCONSISTENT SF_CLUSTER_ERROR_LEADER_INCONSISTENT
diff --git a/src/sf_util.c b/src/sf_util.c
index f8eb7f1..9c04db6 100644
--- a/src/sf_util.c
+++ b/src/sf_util.c
@@ -311,6 +311,8 @@ ScheduleEntry *sf_logger_set_schedule_entry(struct log_context *pContext,
 const char *sf_strerror(const int errnum)
 {
     switch (errnum) {
+        case SF_CLUSTER_ERROR_BINLOG_MISSED:
+            return "binlog missed";
         case SF_CLUSTER_ERROR_BINLOG_INCONSISTENT:
             return "binlog inconsistent";
         case SF_CLUSTER_ERROR_LEADER_INCONSISTENT: