diff --git a/src/Adapter/PlatformServices.WinUI/Services/WinUIFileOperations.cs b/src/Adapter/PlatformServices.WinUI/Services/WinUIFileOperations.cs
index 6c68de2a33..eb91f87fde 100644
--- a/src/Adapter/PlatformServices.WinUI/Services/WinUIFileOperations.cs
+++ b/src/Adapter/PlatformServices.WinUI/Services/WinUIFileOperations.cs
@@ -108,7 +108,7 @@ public void DisposeNavigationSession(object navigationSession)
         /// </returns>
         public string GetFullFilePath(string assemblyFileName)
         {
-            return (SafeInvoke<string>(() => Path.GetFullPath(assemblyFileName)) as string) ?? assemblyFileName;
+            return (SafeInvoke<string>(() => Path.Combine(Windows.ApplicationModel.Package.Current.InstalledLocation.Path, assemblyFileName)) as string) ?? assemblyFileName;
         }
 
         private static object SafeInvoke<T>(Func<T> action, string messageFormatOnException = null)