diff --git a/src/idle.c b/src/idle.c
index c8af8f905beda4d9e54047c72ca1db12adae9d6b..6d5ce9fca0e687e938ef2a1e6be1c412685360e5 100644
--- a/src/idle.c
+++ b/src/idle.c
@@ -122,10 +122,11 @@ void rt_thread_idle_excute(void)
 				/* unload module */
 				rt_module_unload(module);
 			}	
-		}	
+		}
+#endif	//RT_USING_MODULE
 	}
-#endif	
-#endif
+	
+#endif //RT_USING_HEAP
 }
 
 static void rt_thread_idle_entry(void* parameter)