diff --git a/lib/pleroma/formatter.ex b/lib/pleroma/formatter.ex
index 53e2c204f..df7ffbc41 100644
--- a/lib/pleroma/formatter.ex
+++ b/lib/pleroma/formatter.ex
@@ -200,7 +200,9 @@ def add_user_links({subs, text}, mentions) do
           ap_id = info["source_data"]["url"] || ap_id
 
           short_match = String.split(match, "@") |> tl() |> hd()
-          {uuid, "<span><a href='#{ap_id}'>@<span>#{short_match}</span></a></span>"}
+
+          {uuid,
+           "<span><a class='mention' href='#{ap_id}'>@<span>#{short_match}</span></a></span>"}
         end)
 
     {subs, uuid_text}
diff --git a/test/formatter_test.exs b/test/formatter_test.exs
index e89b36663..c2b3d4ac0 100644
--- a/test/formatter_test.exs
+++ b/test/formatter_test.exs
@@ -109,9 +109,9 @@ test "gives a replacement for user links" do
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
       expected_text =
-        "<span><a href='#{gsimg.ap_id}'>@<span>gsimg</span></a></span> According to <span><a href='#{
+        "<span><a class='mention' href='#{gsimg.ap_id}'>@<span>gsimg</span></a></span> According to <span><a class='mention' href='#{
           "https://archeme/@archaeme"
-        }'>@<span>archaeme</span></a></span>, that is @daggsy. Also hello <span><a href='#{
+        }'>@<span>archaeme</span></a></span>, that is @daggsy. Also hello <span><a class='mention' href='#{
           archaeme_remote.ap_id
         }'>@<span>archaeme</span></a></span>"
 
diff --git a/test/web/twitter_api/twitter_api_test.exs b/test/web/twitter_api/twitter_api_test.exs
index 4716abb84..edacb312d 100644
--- a/test/web/twitter_api/twitter_api_test.exs
+++ b/test/web/twitter_api/twitter_api_test.exs
@@ -35,7 +35,7 @@ test "create a status" do
     {:ok, activity = %Activity{}} = TwitterAPI.create_status(user, input)
 
     expected_text =
-      "Hello again, <span><a href='shp'>@<span>shp</span></a></span>.&lt;script&gt;&lt;/script&gt;<br>This is on another :moominmamma: line. <a href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a> <a href='http://localhost:4001/tag/epic' rel='tag'>#epic</a> <a href='http://localhost:4001/tag/phantasmagoric' rel='tag'>#phantasmagoric</a><br><a href=\"http://example.org/image.jpg\" class='attachment'>image.jpg</a>"
+      "Hello again, <span><a class='mention' href='shp'>@<span>shp</span></a></span>.&lt;script&gt;&lt;/script&gt;<br>This is on another :moominmamma: line. <a href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a> <a href='http://localhost:4001/tag/epic' rel='tag'>#epic</a> <a href='http://localhost:4001/tag/phantasmagoric' rel='tag'>#phantasmagoric</a><br><a href=\"http://example.org/image.jpg\" class='attachment'>image.jpg</a>"
 
     assert get_in(activity.data, ["object", "content"]) == expected_text
     assert get_in(activity.data, ["object", "type"]) == "Note"