diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 7946214d4aa40c404097aeb1ad3b2028578c779d..117874475ba9c120d612643d14250810bd0f5e8c 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -2169,6 +2169,7 @@ int16_t tscGetTagColIndexById(STableMeta* pTableMeta, int16_t colId) {
 
   // can not reach here
   assert(0);
+  return INT16_MIN;
 }
 
 bool tscIsUpdateQuery(SSqlObj* pSql) {