diff --git a/lib/swagger.js b/lib/swagger.js
index 3712deee..456f652e 100644
--- a/lib/swagger.js
+++ b/lib/swagger.js
@@ -562,7 +562,7 @@
     };
 
     SwaggerOperation.prototype.urlify = function(args, includeApiKey) {
-      var param, queryParams, url, _i, _len, _ref;
+      var param, queryParams, reg, url, _i, _len, _ref;
       if (includeApiKey == null) {
         includeApiKey = true;
       }
@@ -572,7 +572,7 @@
         param = _ref[_i];
         if (param.paramType === 'path') {
           if (args[param.name]) {
-            reg = new RegExp('\{'+param.name+'[^\}]*\}', 'gi');
+            reg = new RegExp('\{' + param.name + '[^\}]*\}', 'gi');
             url = url.replace(reg, encodeURIComponent(args[param.name]));
             delete args[param.name];
           } else {