diff --git a/app/src/main/java/io/heckel/ntfy/msg/MessagingService.kt b/app/src/main/java/io/heckel/ntfy/msg/MessagingService.kt
index 3811d09..491ed07 100644
--- a/app/src/main/java/io/heckel/ntfy/msg/MessagingService.kt
+++ b/app/src/main/java/io/heckel/ntfy/msg/MessagingService.kt
@@ -66,6 +66,7 @@ class MessagingService : FirebaseMessagingService() {
     override fun onNewToken(token: String) {
         // Called if the FCM registration token is updated
         // We don't actually use or care about the token, since we're using topics
+        Log.d(TAG, "Registration token was updated: $token")
     }
 
     override fun onDestroy() {
diff --git a/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt b/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
index 095d2b1..487db92 100644
--- a/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
@@ -100,7 +100,17 @@ class MainActivity : AppCompatActivity(), ActionMode.Callback {
             lastActive = Date().time/1000
         )
         viewModel.add(subscription)
-        FirebaseMessaging.getInstance().subscribeToTopic(topic) // FIXME ignores baseUrl
+        FirebaseMessaging
+            .getInstance()
+            .subscribeToTopic(topic)
+            .addOnCompleteListener {
+                Log.d(TAG, "Subscribing to topic complete: result=${it.result}, exception=${it.exception}, successful=${it.isSuccessful}")
+            }
+            .addOnFailureListener {
+                Log.e(TAG, "Subscribing to topic failed: $it")
+            }
+
+        // FIXME ignores baseUrl
 
         onSubscriptionItemClick(subscription) // Add to detail view after adding it
     }