diff --git a/test/formatter_test.exs b/test/formatter_test.exs
index 5d745510f..84d826295 100644
--- a/test/formatter_test.exs
+++ b/test/formatter_test.exs
@@ -15,7 +15,7 @@ test "turns hashtags into links" do
       text = "I love #cofe and #2hu"
 
       expected_text =
-        "I love <a href='http://localhost:4001/tag/cofe' rel='tag'>#cofe</a> and <a href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a>"
+        "I love <a data-tag='cofe' href='http://localhost:4001/tag/cofe' rel='tag'>#cofe</a> and <a data-tag='2hu' href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a>"
 
       tags = Formatter.parse_tags(text)
 
@@ -128,9 +128,9 @@ test "gives a replacement for user links" do
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
       expected_text =
-        "<span><a class='mention' href='#{gsimg.ap_id}'>@<span>gsimg</span></a></span> According to <span><a class='mention' href='#{
+        "<span><a data-user='#{gsimg.id}' class='mention' href='#{gsimg.ap_id}'>@<span>gsimg</span></a></span> According to <span><a data-user='#{archaeme.id}' class='mention' href='#{
           "https://archeme/@archaeme"
-        }'>@<span>archaeme</span></a></span>, that is @daggsy. Also hello <span><a class='mention' href='#{
+        }'>@<span>archaeme</span></a></span>, that is @daggsy. Also hello <span><a data-user='#{archaeme_remote.id}' class='mention' href='#{
           archaeme_remote.ap_id
         }'>@<span>archaeme</span></a></span>"
 
@@ -150,7 +150,7 @@ test "gives a replacement for user links when the user is using Osada" do
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
       expected_text =
-        "<span><a class='mention' href='#{mike.ap_id}'>@<span>mike</span></a></span> test"
+        "<span><a data-user='#{mike.id}' class='mention' href='#{mike.ap_id}'>@<span>mike</span></a></span> test"
 
       assert expected_text == Formatter.finalize({subs, text})
     end
@@ -166,7 +166,7 @@ test "gives a replacement for single-character local nicknames" do
       assert length(subs) == 1
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
-      expected_text = "<span><a class='mention' href='#{o.ap_id}'>@<span>o</span></a></span> hi"
+      expected_text = "<span><a data-user='#{o.id}' class='mention' href='#{o.ap_id}'>@<span>o</span></a></span> hi"
       assert expected_text == Formatter.finalize({subs, text})
     end