diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index badd096b73f7c34fc1a179ab346de57d4aab0b1c..ae47adc36e95bec19e8684bf1ef4a2c19b2b4f94 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -462,6 +462,7 @@ static int taos_set_config_imp(const char *config){
   }
   taosPrintGlobalCfg();
   setConfFlag = true;
+  return 0;
 }
 
 int taos_set_config(const char *config){