diff --git a/app/views/projects/branches.json.jbuilder b/app/views/projects/branches.json.jbuilder
index 58f7af98f..d6f451373 100644
--- a/app/views/projects/branches.json.jbuilder
+++ b/app/views/projects/branches.json.jbuilder
@@ -7,19 +7,11 @@ json.array! @branches do |branch|
   json.zip_url render_zip_url(@project, branch['name'])
   json.tar_url render_tar_url(@project, branch['name'])
   json.last_commit do
-    json.id branch['commit']['id']
+    json.sha branch['commit']['id']
     json.message branch['commit']['message']
     json.timestamp render_unix_time(branch['commit']['timestamp'])
     json.time_from_now time_from_now(branch['commit']['timestamp'])
-  end
-
-  user = find_user_by_login_or_mail(branch['commit']['author']['name'])
-  json.author do
-    if user
-      json.login user.login
-      json.image_url url_to_avatar(user)
-    else
-      json.nil!
-    end
+    json.author branch['commit']['author']
+    json.committer branch['commit']['committer']
   end
 end