diff --git a/system/main.c b/system/main.c
index 854bd45fc9..c61e97c17b 100644
--- a/system/main.c
+++ b/system/main.c
@@ -81,7 +81,7 @@ int64_t icount_get_raw(void);
 //========= Instrumentation end
 int main(int argc, char **argv)
 {
-    
+    //test
     int input_size;
     printf("argc: %d\n", argc);
     //========= Instrumentation start