diff --git a/apps/openmw/mwgui/spellbuyingwindow.cpp b/apps/openmw/mwgui/spellbuyingwindow.cpp
index 48e1815454..59d811335c 100644
--- a/apps/openmw/mwgui/spellbuyingwindow.cpp
+++ b/apps/openmw/mwgui/spellbuyingwindow.cpp
@@ -1,5 +1,7 @@
 #include "spellbuyingwindow.hpp"
 
+#include <algorithm>
+
 #include <boost/lexical_cast.hpp>
 
 #include "../mwbase/environment.hpp"