--- src/src/gui/xBRZ/xbrz.cpp.orig	2016-05-13 22:35:12.534869565 +0200
+++ src/src/gui/xBRZ/xbrz.cpp	2016-05-13 22:34:35.558177931 +0200
@@ -15,6 +15,7 @@
 
 #include "xbrz.h"
 #include <cassert>
+#include <cmath>
 #include <algorithm>
 #include <vector>