diff --git Gruntfile.js Gruntfile.js
index 9f4d3fe..e7e1262 100644
--- Gruntfile.js
+++ Gruntfile.js
@@ -85,7 +85,7 @@ module.exports = function(grunt) {
 							// If the version includes an SVN commit (-12345), it's not a released alpha/beta. Append a date.
 							version = version.replace( /-[\d]{5}$/, '-' + grunt.template.today( 'yyyymmdd' ) );
 
-							return "$wp_version = '" + version + "';";
+							return '$wp_version = \'' + version + '\';';
 						});
 					}
 				},