diff --git a/src/Toolkit/Toolkit.Maui/BasemapGallery/BasemapGallery.cs b/src/Toolkit/Toolkit.Maui/BasemapGallery/BasemapGallery.cs
index 7597dea50..3e28f8767 100644
--- a/src/Toolkit/Toolkit.Maui/BasemapGallery/BasemapGallery.cs
+++ b/src/Toolkit/Toolkit.Maui/BasemapGallery/BasemapGallery.cs
@@ -49,6 +49,9 @@ public BasemapGallery()
 
     private async void BasemapGallery_Loaded(object? sender, EventArgs e)
     {
+        // Unsubscribe from the Loaded event to ensure this only runs once.
+        Loaded -= BasemapGallery_Loaded;
+
         if (AvailableBasemaps is null)
         {
             _loadCancellationTokenSource = new CancellationTokenSource();
diff --git a/src/Toolkit/Toolkit.UI.Controls/BasemapGallery/BasemapGallery.Windows.cs b/src/Toolkit/Toolkit.UI.Controls/BasemapGallery/BasemapGallery.Windows.cs
index dd6cc8258..93edb92d2 100644
--- a/src/Toolkit/Toolkit.UI.Controls/BasemapGallery/BasemapGallery.Windows.cs
+++ b/src/Toolkit/Toolkit.UI.Controls/BasemapGallery/BasemapGallery.Windows.cs
@@ -53,6 +53,9 @@ public BasemapGallery()
 
         private async void BasemapGallery_Loaded(object? sender, RoutedEventArgs e)
         {
+            // Unsubscribe from the Loaded event to ensure this only runs once.
+            Loaded -= BasemapGallery_Loaded;
+            
             if (AvailableBasemaps is null)
             {
                 _loadCancellationTokenSource = new CancellationTokenSource();