diff --git a/spec/lib/gitlab/markdown/user_reference_filter_spec.rb b/spec/lib/gitlab/markdown/user_reference_filter_spec.rb
index 1704c826d5..a5eb927072 100644
--- a/spec/lib/gitlab/markdown/user_reference_filter_spec.rb
+++ b/spec/lib/gitlab/markdown/user_reference_filter_spec.rb
@@ -65,6 +65,7 @@ module Gitlab::Markdown
     end
 
     it 'links with adjacent text' do
+      skip 'TODO (rspeicher): Re-enable when usernames can\'t end in periods.'
       doc = filter("Mention me (@#{user.username}.)")
       expect(doc.to_html).to match(/\(<a.+>@#{user.username}<\/a>\.\)/)
     end