diff --git a/frontend/platform/platform_apple.c b/frontend/platform/platform_apple.c
index b3f1676eb2..1bd337c510 100644
--- a/frontend/platform/platform_apple.c
+++ b/frontend/platform/platform_apple.c
@@ -106,24 +106,24 @@ static void do_iteration(void)
 
 void apple_start_iteration(void)
 {
-  if (iterate_observer == NULL)
-  {
-    iterate_observer =
+   if (iterate_observer)
+      return;
+
+   iterate_observer =
       CFRunLoopObserverCreate(0, kCFRunLoopBeforeWaiting,
-                              true, 0, (CFRunLoopObserverCallBack)do_iteration, 0);
-    CFRunLoopAddObserver(CFRunLoopGetMain(), iterate_observer,
-                         kCFRunLoopCommonModes);
-  }
+            true, 0, (CFRunLoopObserverCallBack)do_iteration, 0);
+   CFRunLoopAddObserver(CFRunLoopGetMain(), iterate_observer,
+         kCFRunLoopCommonModes);
 }
 
 void apple_stop_iteration(void)
 {
-  if (iterate_observer != NULL)
-  {
-    CFRunLoopObserverInvalidate(iterate_observer);
-    CFRelease(iterate_observer);
-    iterate_observer = NULL;
-  }
+   if (!iterate_observer)
+      return;
+
+   CFRunLoopObserverInvalidate(iterate_observer);
+   CFRelease(iterate_observer);
+   iterate_observer = NULL;
 }
 
 static void frontend_apple_get_environment_settings(int *argc, char *argv[],