diff --git a/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js b/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js
index 4ddd717d..540af2f7 100644
--- a/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js
+++ b/source/Ox.UI/js/Video/Ox.VideoPanelPlayer.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.VideoPanelPlayer <f:Ox.Element> VideoPanelPlayer Object
     () ->              <f> VideoPanelPlayer Object
diff --git a/source/Ox.UI/js/Video/Ox.VideoPlayer.js b/source/Ox.UI/js/Video/Ox.VideoPlayer.js
index 0527a42c..90be76f2 100644
--- a/source/Ox.UI/js/Video/Ox.VideoPlayer.js
+++ b/source/Ox.UI/js/Video/Ox.VideoPlayer.js
@@ -1,5 +1,7 @@
 // vim: et:ts=4:sw=4:sts=4:ft=javascript
 
+'use strict';
+
 /*@
 Ox.VideoPlayer <f> Generic Video Player
     (options, self) -> <o> Video Player