diff --git a/index.js b/index.js
index bd27153..44b93cf 100644
--- a/index.js
+++ b/index.js
@@ -80,6 +80,12 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
   }
   if (t === 'join-public-discovery') {
     await platform.joinPublicDiscovery(msg.inviteCode)
+    if (platform.activeChannelId) {
+      send({
+        type: 'composer-focus-channel',
+        channelId: platform.activeChannelId
+      })
+    }
     pushState()
     return true
   }