diff --git a/app/src/main/java/com/futo/platformplayer/mdns/ServiceDiscoverer.kt b/app/src/main/java/com/futo/platformplayer/mdns/ServiceDiscoverer.kt
index 79d29736..f4a3e5e9 100644
--- a/app/src/main/java/com/futo/platformplayer/mdns/ServiceDiscoverer.kt
+++ b/app/src/main/java/com/futo/platformplayer/mdns/ServiceDiscoverer.kt
@@ -37,7 +37,10 @@ class ServiceDiscoverer(names: Array<String>, private val _onServicesUpdated: (L
     }
 
     fun start() {
-        if (_started) throw Exception("Already running.")
+        if (_started) {
+            Logger.i(TAG, "Already started.")
+            return
+        }
         _started = true
 
         val listener = MDNSListener()
diff --git a/app/src/main/java/com/futo/platformplayer/states/StateSync.kt b/app/src/main/java/com/futo/platformplayer/states/StateSync.kt
index 7c05d20d..b6bf0ca8 100644
--- a/app/src/main/java/com/futo/platformplayer/states/StateSync.kt
+++ b/app/src/main/java/com/futo/platformplayer/states/StateSync.kt
@@ -66,6 +66,10 @@ class StateSync {
     val deviceUpdatedOrAdded: Event2<String, SyncSession> = Event2()
 
     fun start() {
+        if (_started) {
+            Logger.i(TAG, "Already started.")
+            return
+        }
         _started = true
 
         if (Settings.instance.synchronization.broadcast || Settings.instance.synchronization.connectDiscovered) {