diff --git a/SampleApps/AvaloniaApp/MainWindow.axaml b/SampleApps/AvaloniaApp/MainWindow.axaml
index 5248c9b4..b35df465 100644
--- a/SampleApps/AvaloniaApp/MainWindow.axaml
+++ b/SampleApps/AvaloniaApp/MainWindow.axaml
@@ -142,7 +142,7 @@
                 <tools:MapLayerMenuItem Text="OpenStreetMap German">
                     <map:MapTileLayer
                         TileSource="https://tile.openstreetmap.de/{z}/{x}/{y}.png"
-                        SourceName="OpenStreetMap German"
+                        SourceName="OpenStreetMap.de"
                         Description="© [OpenStreetMap Deutschland](https://www.openstreetmap.de) © [OpenStreetMap contributors](http://www.openstreetmap.org/copyright)"/>
                 </tools:MapLayerMenuItem>
                 <tools:MapLayerMenuItem Text="OpenStreetMap French">
diff --git a/SampleApps/UniversalApp/MainPage.xaml b/SampleApps/UniversalApp/MainPage.xaml
index 9161664f..2c6038e9 100644
--- a/SampleApps/UniversalApp/MainPage.xaml
+++ b/SampleApps/UniversalApp/MainPage.xaml
@@ -195,7 +195,7 @@
                 <tools:MapLayerMenuItem Text="OpenStreetMap German">
                     <map:MapTileLayer
                         TileSource="https://tile.openstreetmap.de/{z}/{x}/{y}.png"
-                        SourceName="OpenStreetMap German"
+                        SourceName="OpenStreetMap.de"
                         Description="© [OpenStreetMap Deutschland](https://www.openstreetmap.de) © [OpenStreetMap contributors](http://www.openstreetmap.org/copyright)"/>
                 </tools:MapLayerMenuItem>
                 <tools:MapLayerMenuItem Text="OpenStreetMap French">
diff --git a/SampleApps/WinUiApp/MainWindow.xaml b/SampleApps/WinUiApp/MainWindow.xaml
index 09cc1653..61075d72 100644
--- a/SampleApps/WinUiApp/MainWindow.xaml
+++ b/SampleApps/WinUiApp/MainWindow.xaml
@@ -221,7 +221,7 @@
                 <tools:MapLayerMenuItem Text="OpenStreetMap German">
                     <map:MapTileLayer
                         TileSource="https://tile.openstreetmap.de/{z}/{x}/{y}.png"
-                        SourceName="OpenStreetMap German"
+                        SourceName="OpenStreetMap.de"
                         Description="© [OpenStreetMap Deutschland](https://www.openstreetmap.de) © [OpenStreetMap contributors](http://www.openstreetmap.org/copyright)"/>
                 </tools:MapLayerMenuItem>
                 <tools:MapLayerMenuItem Text="OpenStreetMap French">
diff --git a/SampleApps/WpfApplication/MainWindow.xaml b/SampleApps/WpfApplication/MainWindow.xaml
index 877443a8..bd886263 100644
--- a/SampleApps/WpfApplication/MainWindow.xaml
+++ b/SampleApps/WpfApplication/MainWindow.xaml
@@ -200,7 +200,7 @@
                 <tools:MapLayerMenuItem Text="OpenStreetMap German">
                     <map:MapTileLayer
                         TileSource="https://tile.openstreetmap.de/{z}/{x}/{y}.png"
-                        SourceName="OpenStreetMap German"
+                        SourceName="OpenStreetMap.de"
                         Description="© [OpenStreetMap Deutschland](https://www.openstreetmap.de) © [OpenStreetMap contributors](http://www.openstreetmap.org/copyright)"/>
                 </tools:MapLayerMenuItem>
                 <tools:MapLayerMenuItem Text="OpenStreetMap French">