diff --git a/src/guiengine/widgets/rating_bar_widget.cpp b/src/guiengine/widgets/rating_bar_widget.cpp
index 856a4c24b..83b76a67d 100644
--- a/src/guiengine/widgets/rating_bar_widget.cpp
+++ b/src/guiengine/widgets/rating_bar_widget.cpp
@@ -19,15 +19,21 @@
 #include "guiengine/modaldialog.hpp"
 #include "guiengine/widgets/rating_bar_widget.hpp"
 #include "utils/string_utils.hpp"
-#include <string.h>
 
 #include <IGUIEnvironment.h>
 #include <IGUIElement.h>
 #include <IGUIButton.h>
 #include <cmath>
-#ifndef round
-#  define round(x)  (floor(x+0.5f))
-#endif
+
+#ifdef WIN32
+// VS up to and including VS 2012 do not provide the normal round function
+static inline double round(double val)
+{    
+    return floor(val + 0.5);
+}
+#endif
+
+#include <string.h>
 
 using namespace GUIEngine;
 using namespace irr::core;