diff --git a/customer_app/bl602_boot2_mini/bl602_boot2_mini/blsp_boot2.c b/customer_app/bl602_boot2_mini/bl602_boot2_mini/blsp_boot2.c
index 0f0e980c..7ebd4d71 100644
--- a/customer_app/bl602_boot2_mini/bl602_boot2_mini/blsp_boot2.c
+++ b/customer_app/bl602_boot2_mini/bl602_boot2_mini/blsp_boot2.c
@@ -498,7 +498,7 @@ int main(void)
     MSG("jump entry:%08x\r\n",(unsigned int)entry);
     BLSP_Boot2_Jump_Entry(entry);
 
-    return ;
+    return 0;
 }
 
 void bfl_main()