diff --git a/samples/XamlTestApplication/App.config b/samples/XamlTestApplication/App.config
index 2e8edd3a62..bfc5697e01 100644
--- a/samples/XamlTestApplication/App.config
+++ b/samples/XamlTestApplication/App.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
     <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6"/>
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1"/>
     </startup>
   <runtime>
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
diff --git a/samples/XamlTestApplication/XamlTestApplication.csproj b/samples/XamlTestApplication/XamlTestApplication.csproj
index 6fd71732d6..e202c54970 100644
--- a/samples/XamlTestApplication/XamlTestApplication.csproj
+++ b/samples/XamlTestApplication/XamlTestApplication.csproj
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>XamlTestApplication</RootNamespace>
     <AssemblyName>XamlTestApplication</AssemblyName>
-    <TargetFrameworkVersion>v4.6</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>