diff --git a/apps/openmw/mwgui/review.cpp b/apps/openmw/mwgui/review.cpp
index 1bcd2d31aa..023f23815c 100644
--- a/apps/openmw/mwgui/review.cpp
+++ b/apps/openmw/mwgui/review.cpp
@@ -1,5 +1,7 @@
 #include "review.hpp"
 
+#include <cmath>
+
 #include <MyGUI_ScrollView.h>
 #include <MyGUI_ImageBox.h>
 #include <MyGUI_Gui.h>