diff --git a/content/ui.js b/content/ui.js
index 367a3c11..302be48a 100644
--- a/content/ui.js
+++ b/content/ui.js
@@ -499,7 +499,7 @@ function CommandLine() //{{{
                 // TODO: allow for escaping the ","
                 try
                 {
-                    new RegExp("^(" + value.join("|") + ")$");
+                    RegExp("^(" + values.join("|") + ")$");
                     return true;
                 }
                 catch (e)