diff --git a/extensions/xforms/install.rdf b/extensions/xforms/install.rdf
index dc12e0c5342..50988e9da8c 100644
--- a/extensions/xforms/install.rdf
+++ b/extensions/xforms/install.rdf
@@ -36,6 +36,15 @@
       </Description>
     </em:targetApplication>
 
+    <em:targetApplication>
+      <!-- Toolkit -->
+      <Description>
+        <em:id>toolkit@mozilla.org</em:id>
+        <em:minVersion>@MOZILLA_VERSION_U@</em:minVersion>
+        <em:maxVersion>@MOZILLA_VERSION_U@</em:maxVersion>
+      </Description>
+    </em:targetApplication>
+
     <em:name>Mozilla XForms</em:name>
     <em:description>XForms support for Mozilla (Gecko v@MOZILLA_VERSION_U@ - @BUILD_ID@)</em:description>
     <em:homepageURL>http://www.mozilla.org/projects/xforms/</em:homepageURL>