1 files changed, 5 insertions, 2 deletions
diff --git a/ui/ie.js b/ui/ie.js
index 1ce6a8450..1754b94a9 100644
--- a/ui/ie.js
+++ b/ui/ie.js
@@ -1,4 +1,6 @@
 ( function( factory ) {
+	"use strict";
+
 	if ( typeof define === "function" && define.amd ) {
 
 		// AMD. Register as an anonymous module.
@@ -8,8 +10,9 @@
 		// Browser globals
 		factory( jQuery );
 	}
-} ( function( $ ) {
+} )( function( $ ) {
+"use strict";
 
 // This file is deprecated
 return $.ui.ie = !!/msie [\w.]+/.exec( navigator.userAgent.toLowerCase() );
-} ) );
+} );