diff --git a/src/Shared/HandyControl_Shared/Properties/AssemblyInfo.cs b/src/Shared/HandyControl_Shared/Properties/AssemblyInfo.cs
index a74a8f4b..13c7073e 100644
--- a/src/Shared/HandyControl_Shared/Properties/AssemblyInfo.cs
+++ b/src/Shared/HandyControl_Shared/Properties/AssemblyInfo.cs
@@ -12,5 +12,7 @@
 [assembly: XmlnsDefinition("https://handyorg.github.io/handycontrol", "HandyControl.Data")]
 [assembly: XmlnsDefinition("https://handyorg.github.io/handycontrol", "HandyControl.Properties.Langs")]
 [assembly: XmlnsDefinition("https://handyorg.github.io/handycontrol", "HandyControl.Themes")]
+#if NET40
 [assembly: XmlnsDefinition("https://handyorg.github.io/handycontrol", "Microsoft.Windows.Shell")]
+#endif
 [assembly: XmlnsPrefix("https://handyorg.github.io/handycontrol", "hc")]