diff --git a/course/format/templates/local/content/cm/cmicon.mustache b/course/format/templates/local/content/cm/cmicon.mustache
index b7edabe0207..c86be6c9953 100644
--- a/course/format/templates/local/content/cm/cmicon.mustache
+++ b/course/format/templates/local/content/cm/cmicon.mustache
@@ -35,7 +35,7 @@
         class="activityicon {{iconclass}}"
         data-region="activity-icon"
         data-id="{{cmid}}"
-        alt=""
+        alt="{{#showtooltip}}{{#cleanstr}} activityicon, moodle, {{{pluginname}}} {{/cleanstr}}{{/showtooltip}}"
         {{#showtooltip}}title="{{{pluginname}}}"{{/showtooltip}}
     >
 </div>