diff --git a/src/Xamarin.Android.Tools.AndroidSdk/AndroidAppManifest.cs b/src/Xamarin.Android.Tools.AndroidSdk/AndroidAppManifest.cs
index 87ed37a34eb..e79ce736975 100644
--- a/src/Xamarin.Android.Tools.AndroidSdk/AndroidAppManifest.cs
+++ b/src/Xamarin.Android.Tools.AndroidSdk/AndroidAppManifest.cs
@@ -353,8 +353,8 @@ public IEnumerable<string> GetLaunchableActivityNames ()
 		{
 			return GetLaunchableActivities ()
 				.Select (a => (string?) a.Attribute (aName))
-				.Where (name => !string.IsNullOrEmpty (name) && name != "mono.android.__FastDevLauncher")
-				.Select (name => name!);
+				.OfType<string> ()
+				.Where (name => !string.IsNullOrEmpty (name) && name != "mono.android.__FastDevLauncher");
 		}
 	}
 }