diff --git a/zerver/views/webhooks.py b/zerver/views/webhooks.py
index 361ce60e7e..9a3d3deb00 100644
--- a/zerver/views/webhooks.py
+++ b/zerver/views/webhooks.py
@@ -538,8 +538,9 @@ def api_bitbucket_webhook(request, user_profile, payload=REQ(converter=json_to_d
                    % (payload['user'],
                       payload['canon_url'] + repository['absolute_url']))
     else:
-        content = build_commit_list_content(commits, payload['commits'][-1]['branch'],
-                                            None, payload['user'])
+        branch = payload['commits'][-1]['branch']
+        content = build_commit_list_content(commits, branch, None, payload['user'])
+        subject += '/%s' % (branch,)
 
     subject = elide_subject(subject)
     check_send_message(user_profile, get_client("API"), "stream", [stream], subject, content)