diff --git a/help/add-a-custom-linkifier.md b/help/add-a-custom-linkifier.md
index 084851fc0b..95e6d5e502 100644
--- a/help/add-a-custom-linkifier.md
+++ b/help/add-a-custom-linkifier.md
@@ -7,8 +7,9 @@ party issue trackers, like GitHub, Salesforce, Zendesk, and others.
 For instance, you can add a linkifier that automatically turns `#2468`
 into a link to `https://github.com/zulip/zulip/issues/2468`.
 
-If the pattern appears in a message topic, Zulip adds a little button to the
-right of the topic that links to the appropriate URL.
+If the pattern appears in a topic, Zulip adds an **Open**
+(<i class="fa fa-external-link-square"></i>) button to the right of the
+topic in the message recipient bar that links to the appropriate URL.
 
 ### Add a custom linkifier