diff --git a/receivers/android/app/src/main/AndroidManifest.xml b/receivers/android/app/src/main/AndroidManifest.xml
index 8e5e578..cfa52ba 100644
--- a/receivers/android/app/src/main/AndroidManifest.xml
+++ b/receivers/android/app/src/main/AndroidManifest.xml
@@ -26,6 +26,7 @@
         <activity
             android:name=".MainActivity"
             android:theme="@style/Theme.Main"
+            android:launchMode="singleInstance"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -41,6 +42,7 @@
         <activity
             android:name=".PlayerActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
+            android:launchMode="singleInstance"
             android:theme="@style/Theme.Player" />
 
         <receiver
diff --git a/receivers/android/app/src/main/java/com/futo/fcast/receiver/Utility.kt b/receivers/android/app/src/main/java/com/futo/fcast/receiver/Utility.kt
new file mode 100644
index 0000000..7717680
--- /dev/null
+++ b/receivers/android/app/src/main/java/com/futo/fcast/receiver/Utility.kt
@@ -0,0 +1,11 @@
+package com.futo.fcast.receiver
+
+import android.os.Looper
+import android.util.Log
+
+fun ensureNotMainThread() {
+    if (Looper.myLooper() == Looper.getMainLooper()) {
+        Log.e("Utility", "Throwing exception because a function that should not be called on main thread, is called on main thread")
+        throw IllegalStateException("Cannot run on main thread")
+    }
+}
\ No newline at end of file