diff --git a/samples/XamlTestApplicationPcl/Views/MainWindow.paml b/samples/XamlTestApplicationPcl/Views/MainWindow.paml
index 149948db44..3b6433d5b4 100644
--- a/samples/XamlTestApplicationPcl/Views/MainWindow.paml
+++ b/samples/XamlTestApplicationPcl/Views/MainWindow.paml
@@ -1,7 +1,7 @@
 <Window x:Class="XamlTestApplication.MainWindow"
         xmlns="https://github.com/perspex"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
-        xmlns:vm="clr-namespace:XamlTestApplication.ViewModels;assembly=XamlTestApplication"
+        xmlns:vm="clr-namespace:XamlTestApplication.ViewModels;assembly=XamlTestApplicationPcl"
         Title="Perspex Test Application" Height="350" Width="525" SizeToContent="WidthAndHeight" >
     <Grid RowDefinitions="Auto,*,Auto" ColumnDefinitions="*,*">
         <TabControl Grid.Row="1" Grid.ColumnSpan="2" Padding="5">