diff --git a/src/css/curCSS.js b/src/css/curCSS.js
index 111285b2ea..882e7423e6 100644
--- a/src/css/curCSS.js
+++ b/src/css/curCSS.js
@@ -2,7 +2,7 @@ define( [
 	"../core",
 	"../core/isAttached",
 	"./var/getStyles"
-], function( jQuery, isAttached, rboxStyle, getStyles ) {
+], function( jQuery, isAttached, getStyles ) {
 
 "use strict";
 
diff --git a/src/css/var/rboxStyle.js b/src/css/var/rboxStyle.js
deleted file mode 100644
index 902c01085c..0000000000
--- a/src/css/var/rboxStyle.js
+++ /dev/null
@@ -1,7 +0,0 @@
-define( [
-	"./cssExpand"
-], function( cssExpand ) {
-	"use strict";
-
-	return new RegExp( cssExpand.join( "|" ), "i" );
-} );