diff --git a/apps/openmw/mwgui/itemview.cpp b/apps/openmw/mwgui/itemview.cpp
index 6af6a3b3f6..ed2002d72c 100644
--- a/apps/openmw/mwgui/itemview.cpp
+++ b/apps/openmw/mwgui/itemview.cpp
@@ -1,5 +1,7 @@
 #include "itemview.hpp"
 
+#include <cmath>
+
 #include <boost/lexical_cast.hpp>
 
 #include <MyGUI_FactoryManager.h>