diff --git a/ApplicationCode/Application/Tools/RiaEclipseUnitTools.cpp b/ApplicationCode/Application/Tools/RiaEclipseUnitTools.cpp
index 328a68cc26..a10ceec231 100644
--- a/ApplicationCode/Application/Tools/RiaEclipseUnitTools.cpp
+++ b/ApplicationCode/Application/Tools/RiaEclipseUnitTools.cpp
@@ -21,6 +21,7 @@
 #include "cafAppEnum.h"
 
 #include "cvfAssert.h"
+#include <cmath>
 
 namespace caf
 {