diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index 7e00aacceaaa1ef639bd0143cdff624c826f3c38..4470aa16e3ff2496c5688a4d370d3eb5e100c5a5 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -52,7 +52,7 @@ module ProjectsHelper
       link_to(author_html, user_path(author), class: "author_link #{"#{opts[:mobile_classes]}" if opts[:mobile_classes]}").html_safe
     else
       title = opts[:title].sub(":name", sanitize(author.name))
-      link_to(author_html, user_path(author), class: "author_link has-tooltip", data: { 'original-title'.to_sym => title, container: 'body' } ).html_safe
+      link_to(author_html, user_path(author), class: "author_link has-tooltip", title: title, data: { container: 'body' } ).html_safe
     end
   end
 
diff --git a/app/views/shared/milestones/_issuable.html.haml b/app/views/shared/milestones/_issuable.html.haml
index e1127b2311cec445b4dbd61d76ed55678ce2a0d1..47b66d44e43fcb953fce413d48b45d51bad1a8d9 100644
--- a/app/views/shared/milestones/_issuable.html.haml
+++ b/app/views/shared/milestones/_issuable.html.haml
@@ -23,5 +23,5 @@
 
     - if assignee
       = link_to polymorphic_path(base_url_args, { milestone_title: @milestone.title, assignee_id: issuable.assignee_id, state: 'all' }),
-                class: 'has-tooltip', data: { 'original-title' => "Assigned to #{sanitize(assignee.name)}", container: 'body' } do
+                class: 'has-tooltip', title: "Assigned to #{assignee.name}", data: { container: 'body' } do
         - image_tag(avatar_icon(issuable.assignee, 16), class: "avatar s16", alt: '')
diff --git a/spec/features/issues/update_issues_spec.rb b/spec/features/issues/update_issues_spec.rb
index 3eb903a93feb565982b30474ff5d450433cadcf0..b03dd0f666df56392a78b3492a602ab193bc8b30 100644
--- a/spec/features/issues/update_issues_spec.rb
+++ b/spec/features/issues/update_issues_spec.rb
@@ -48,7 +48,7 @@ feature 'Multiple issue updating from issues#index', feature: true do
       click_update_issues_button
 
       page.within('.issue .controls') do
-        expect(find('.author_link')["data-original-title"]).to have_content(user.name)
+        expect(find('.author_link')["title"]).to have_content(user.name)
       end
     end