diff --git a/docs/mma.md b/docs/mma.md
index 4eb1bfc95..c3729b55c 100644
--- a/docs/mma.md
+++ b/docs/mma.md
@@ -144,6 +144,11 @@ User Attributes
     <td>A boolean indicating that the user has at least one search widget placed on the home screen</td>
     <td><a href="https://github.com/mozilla-mobile/fenix/pull/4694#issuecomment-520591275">#4694</a></td>
   </tr>
+  <tr>
+    <td>`fenix`</td>
+    <td>A boolean indicating that this is a Fenix installation</td>
+    <td><a href="https://github.com/mozilla-mobile/fenix/pull/8208">#8208</a></td>
+  </tr>
 </table>
 
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