diff --git a/layout/pages/settings/video.xml b/layout/pages/settings/video.xml
index e595276b..d3e90247 100644
--- a/layout/pages/settings/video.xml
+++ b/layout/pages/settings/video.xml
@@ -5,6 +5,7 @@
 
 	<scripts>
 		<include src="file://{scripts}/pages/settings/page.js" />
+		<include src="file://{scripts}/util/math.js" />
 		<include src="file://{scripts}/pages/settings/fov.js" />
 	</scripts>