diff --git a/frontend/src/Widget.jsx b/frontend/src/Widget.jsx
index c1733d5..3c8b6e4 100644
--- a/frontend/src/Widget.jsx
+++ b/frontend/src/Widget.jsx
@@ -279,7 +279,12 @@ function Widget() {
         EventDirection.Send,
         'm.room.message',
       );
+      const sendRegisterIdentityCapability = WidgetEventCapability.forRoomEvent(
+        EventDirection.Send,
+        'io.dgov.identity.register',
+      );
       widgetApi.current.requestCapability(sendMessageCapability.raw);
+      widgetApi.current.requestCapability(sendRegisterIdentityCapability.raw);
       widgetApi.current.updateRequestedCapabilities();
     });
 
@@ -368,6 +373,7 @@ function Widget() {
     setShowViewPost(true);
   }, [setViewPost, setShowViewPost]);
 
+  // Sign and send a message
   const registerMatrixIdentity = useCallback(async () => {
     const message = new Date().toISOString();
 
@@ -376,7 +382,6 @@ function Widget() {
       params: [message, account],
     });
 
-    // TODO: Sign and send a message
     await widgetApi.current.sendRoomEvent('io.dgov.identity.register', {
       message,
       signature,