1 files changed, 1 insertions, 1 deletions

diff --git a/sources/core/env.js b/sources/core/env.js
index 43b608a..cbf089c 100644
--- a/sources/core/env.js
+++ b/sources/core/env.js
@@ -136,7 +136,7 @@ if ( !CKEDITOR.env ) {
                                 var domain = document.domain,
                                         hostname = window.location.hostname;
 
-                                return domain != hostname && domain != ( '[' + hostname + ']' ); // IPv6 IP support (#5434)
+                                return domain != hostname && domain != ( '[' + hostname + ']' ); // IPv6 IP support (http://dev.ckeditor.com/ticket/5434)
                         },
 
                         /**