diff --git a/src/Perspex.Controls/Properties/AssemblyInfo.cs b/src/Perspex.Controls/Properties/AssemblyInfo.cs
index 4cda6c4aa5..bf1ddab5d3 100644
--- a/src/Perspex.Controls/Properties/AssemblyInfo.cs
+++ b/src/Perspex.Controls/Properties/AssemblyInfo.cs
@@ -9,4 +9,5 @@ using Perspex.Metadata;
 [assembly: InternalsVisibleTo("Perspex.Controls.UnitTests")]
 
 [assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls")]
-[assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Primitives")]
\ No newline at end of file
+[assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Primitives")]
+[assembly: XmlnsDefinition("https://github.com/perspex", "Perspex.Controls.Shapes")]
\ No newline at end of file