diff --git a/tools/simulator/libsimulator/lib/runtime/Runtime.cpp b/tools/simulator/libsimulator/lib/runtime/Runtime.cpp
index b21627b2a3..bfff76b9f7 100644
--- a/tools/simulator/libsimulator/lib/runtime/Runtime.cpp
+++ b/tools/simulator/libsimulator/lib/runtime/Runtime.cpp
@@ -96,7 +96,13 @@ void resetDesignResolution()
     cocos2d::Size size = ConfigParser::getInstance()->getInitViewSize();
     if (!ConfigParser::getInstance()->isLanscape())
     {
-        std::swap(size.width, size.height);
+        if (size.width > size.height)
+            std::swap(size.width, size.height);
+    }
+    else
+    {
+        if (size.width < size.height)
+            std::swap(size.width, size.height);
     }
     Director::getInstance()->getOpenGLView()->setDesignResolutionSize(size.width, size.height, ResolutionPolicy::EXACT_FIT);
 }