diff --git a/src/video/videomode.h b/src/video/videomode.h
index b3560409c..134650af5 100644
--- a/src/video/videomode.h
+++ b/src/video/videomode.h
@@ -44,7 +44,7 @@ struct VideoMode
 
     uint32_t norm(const VideoMode& other) const
     {
-        return std::abs(this->width-other.width) + std::abs(this->height-other.height);
+        return abs(this->width-other.width) + abs(this->height-other.height);
     }
 };