diff --git a/app/src/main/java/com/droiddeck/launcher/MainActivity.kt b/app/src/main/java/com/droiddeck/launcher/MainActivity.kt
index 99bdf9edc..3577b30cd 100644
--- a/app/src/main/java/com/droiddeck/launcher/MainActivity.kt
+++ b/app/src/main/java/com/droiddeck/launcher/MainActivity.kt
@@ -1050,7 +1050,9 @@ class MainActivity : ComponentActivity() {
 
     private fun refreshSecondScreenDisplays() {
         if (!::displayManager.isInitialized) return
-        secondScreenDisplays = SecondScreenDisplays.available(displayManager)
+        // The launcher can itself be shown on a non-default display (DeX, an external monitor); that one is not a "second screen".
+        val ownDisplayId = if (android.os.Build.VERSION.SDK_INT >= 30) display?.displayId ?: android.view.Display.DEFAULT_DISPLAY else @Suppress("DEPRECATION") windowManager.defaultDisplay.displayId
+        secondScreenDisplays = SecondScreenDisplays.available(displayManager, ownDisplayId)
     }
 
     private fun launchAndroidApp(app: HomeApp.LaunchableApp, displayId: Int?) {