diff --git a/ios/App/Shared/player/AudioPlayer.swift b/ios/App/Shared/player/AudioPlayer.swift
index b002b3ad..77f4dbce 100644
--- a/ios/App/Shared/player/AudioPlayer.swift
+++ b/ios/App/Shared/player/AudioPlayer.swift
@@ -137,21 +137,24 @@ class AudioPlayer: NSObject {
     }
     
     private func setupTimeObserver() {
-        removeTimeObserver()
-        
-        let timeScale = CMTimeScale(NSEC_PER_SEC)
-        // Rate will be different depending on playback speed, aim for 2 observations/sec
-        let seconds = 0.5 * (self.rate > 0 ? self.rate : 1.0)
-        let time = CMTime(seconds: Double(seconds), preferredTimescale: timeScale)
-        self.timeObserverToken = self.audioPlayer.addPeriodicTimeObserver(forInterval: time, queue: queue) { [weak self] time in
-            Task {
-                // Let the player update the current playback positions
-                await PlayerProgress.shared.syncFromPlayer(currentTime: time.seconds, includesPlayProgress: true, isStopping: false)
-            }
+        // Time observer should be configured on the main queue
+        DispatchQueue.main.sync {
+            self.removeTimeObserver()
             
-            // Update the sleep time, if set
-            if self?.sleepTimeStopAt != nil {
-                NotificationCenter.default.post(name: NSNotification.Name(PlayerEvents.sleepSet.rawValue), object: nil)
+            let timeScale = CMTimeScale(NSEC_PER_SEC)
+            // Rate will be different depending on playback speed, aim for 2 observations/sec
+            let seconds = 0.5 * (self.rate > 0 ? self.rate : 1.0)
+            let time = CMTime(seconds: Double(seconds), preferredTimescale: timeScale)
+            self.timeObserverToken = self.audioPlayer.addPeriodicTimeObserver(forInterval: time, queue: queue) { [weak self] time in
+                Task {
+                    // Let the player update the current playback positions
+                    await PlayerProgress.shared.syncFromPlayer(currentTime: time.seconds, includesPlayProgress: true, isStopping: false)
+                }
+                
+                // Update the sleep time, if set
+                if self?.sleepTimeStopAt != nil {
+                    NotificationCenter.default.post(name: NSNotification.Name(PlayerEvents.sleepSet.rawValue), object: nil)
+                }
             }
         }
     }