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 61b1cae..b44acab 100644
--- a/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
+++ b/app/src/main/java/io/heckel/ntfy/ui/MainActivity.kt
@@ -40,6 +40,7 @@ import io.heckel.ntfy.msg.DownloadType
 import io.heckel.ntfy.msg.NotificationDispatcher
 import io.heckel.ntfy.service.SubscriberService
 import io.heckel.ntfy.service.SubscriberServiceManager
+import io.heckel.ntfy.up.TOPIC_MURENA
 import io.heckel.ntfy.util.*
 import io.heckel.ntfy.work.DeleteWorker
 import io.heckel.ntfy.work.PollWorker
@@ -203,7 +204,7 @@ class MainActivity : AppCompatActivity(), ActionMode.Callback, AddFragment.Subsc
 
         lifecycleScope.launch(Dispatchers.IO) {
             val subscriptions = repository.getSubscriptions()
-            val defaultTopic = "murena_notification"
+            val defaultTopic = TOPIC_MURENA
             val hasTestTopic = subscriptions.any { it.topic == defaultTopic }
             if (hasTestTopic) {
                 return@launch
diff --git a/app/src/main/java/io/heckel/ntfy/up/BroadcastReceiver.kt b/app/src/main/java/io/heckel/ntfy/up/BroadcastReceiver.kt
index e23857f..e30f0ed 100644
--- a/app/src/main/java/io/heckel/ntfy/up/BroadcastReceiver.kt
+++ b/app/src/main/java/io/heckel/ntfy/up/BroadcastReceiver.kt
@@ -69,12 +69,17 @@ class BroadcastReceiver : android.content.BroadcastReceiver() {
                 // Add subscription
                 val baseUrl = repository.getDefaultBaseUrl() ?: context.getString(R.string.app_base_url)
                 var topic = UP_PREFIX + randomString(TOPIC_RANDOM_ID_LENGTH)
-                if (appId == "foundation.e.unifiedpoc") {
-                    topic = "murena_notification"
+                if (appId == PACKAGE_MURENA_UNIFIED_PUSH) {
+                    topic = TOPIC_MURENA
                 }
                 val endpoint = topicUrlUp(baseUrl, topic)
+                val subscriptionId =
+                    appId.takeIf { it == PACKAGE_MURENA_UNIFIED_PUSH }?.run {
+                        repository.getSubscriptions()
+                            .find { it.baseUrl == baseUrl && it.topic == topic }?.id
+                    } ?: randomSubscriptionId()
                 val subscription = Subscription(
-                    id = randomSubscriptionId(),
+                    id = subscriptionId,
                     baseUrl = baseUrl,
                     topic = topic,
                     instant = true, // No Firebase, always instant!
@@ -92,10 +97,15 @@ class BroadcastReceiver : android.content.BroadcastReceiver() {
                     newCount = 0,
                     lastActive = Date().time/1000
                 )
-                Log.d(TAG, "Adding subscription with for app $appId (connectorToken $connectorToken): $subscription")
                 try {
                     // Note, this may fail due to a SQL constraint exception, see https://github.com/binwiederhier/ntfy/issues/185
-                    repository.addSubscription(subscription)
+                    if (appId == PACKAGE_MURENA_UNIFIED_PUSH) {
+                        Log.d(TAG, "Updating subscription with for app $appId (connectorToken $connectorToken): $subscription")
+                        repository.updateSubscription(subscription)
+                    } else {
+                        Log.d(TAG, "Adding subscription with for app $appId (connectorToken $connectorToken): $subscription")
+                        repository.addSubscription(subscription)
+                    }
                     distributor.sendEndpoint(appId, connectorToken, endpoint)
 
                     // Refresh (and maybe start) foreground service
diff --git a/app/src/main/java/io/heckel/ntfy/up/Constants.kt b/app/src/main/java/io/heckel/ntfy/up/Constants.kt
index ab9c816..a94fc56 100644
--- a/app/src/main/java/io/heckel/ntfy/up/Constants.kt
+++ b/app/src/main/java/io/heckel/ntfy/up/Constants.kt
@@ -20,3 +20,6 @@ const val EXTRA_TOKEN = "token"
 const val EXTRA_ENDPOINT = "endpoint"
 const val EXTRA_MESSAGE = "message"
 const val EXTRA_BYTES_MESSAGE = "bytesMessage"
+
+const val PACKAGE_MURENA_UNIFIED_PUSH = "foundation.e.unifiedpoc"
+const val TOPIC_MURENA = "murena_notification"