diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.js b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.js
index 105e54300a..407a6a8b0c 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.js
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.js
@@ -114,6 +114,11 @@
     this._el.setActionButtonProp(key, 'label', text);
   };
 
+  GrChangeActionsInterface.prototype.setTitle = function(key, text) {
+    ensureEl(this);
+    this._el.setActionButtonProp(key, 'title', text);
+  };
+
   GrChangeActionsInterface.prototype.setEnabled = function(key, enabled) {
     ensureEl(this);
     this._el.setActionButtonProp(key, 'enabled', enabled);
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html
index 988ed96f7e..fef4fc9df2 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html
@@ -143,10 +143,12 @@ breaking changes to gr-change-actions won’t be noticed.
           assert.equal(button.getAttribute('data-label'), 'Bork!');
           assert.isNotOk(button.disabled);
           changeActions.setLabel(key, 'Yo');
+          changeActions.setTitle(key, 'Yo hint');
           changeActions.setEnabled(key, false);
           changeActions.setIcon(key, 'pupper');
           flush(() => {
             assert.equal(button.getAttribute('data-label'), 'Yo');
+            assert.equal(button.getAttribute('title'), 'Yo hint');
             assert.isTrue(button.disabled);
             assert.equal(Polymer.dom(button).querySelector('iron-icon').icon,
                 'gr-icons:pupper');