diff --git a/chrome.manifest b/chrome.manifest
index 507a2297..88f123c0 100644
--- a/chrome.manifest
+++ b/chrome.manifest
@@ -44,4 +44,4 @@ resource treestyletab-modules modules/
 
 component	{305122d0-5bdc-11de-8a39-0800200c9a66}	components/AboutGroup.js
 contract	@mozilla.org/network/protocol/about;1?what=treestyletab-group	{305122d0-5bdc-11de-8a39-0800200c9a66}
-category	profile-after-change	about:treestyletab-group handler,@mozilla.org/network/protocol/about;1?what=treestyletab-group
+category	profile-after-change	about:treestyletab-group handler	@mozilla.org/network/protocol/about;1?what=treestyletab-group