diff --git a/build/build.js b/build/build.js
index 2bd6daf8b..eb68f685c 100644
--- a/build/build.js
+++ b/build/build.js
@@ -35,7 +35,7 @@ module.exports = function( grunt ) {
 	 */
 	function convert( name, path, contents ) {
 		// Convert var modules
-		if ( /\/var\//.test( path ) ) {
+		if ( /.\/var\//.test( path ) ) {
 			contents = contents
 				.replace( /define\([\w\W]*?return/, "var " + (/var\/([\w-]+)/.exec(name)[1]) + " =" )
 				.replace( rdefineEnd, "" );