diff --git a/ISLE/isle.h b/ISLE/isle.h
index fc78d767..d899d037 100644
--- a/ISLE/isle.h
+++ b/ISLE/isle.h
@@ -270,10 +270,8 @@ inline void Isle::Tick(BOOL sleepIfNotNextFrame)
     return;
   }
 
-  if (sleepIfNotNextFrame == 0)
-    return;
-
-  Sleep(0);
+  if (sleepIfNotNextFrame != 0)
+    Sleep(0);
 }
 
 #endif // ISLE_H