diff --git a/xml/ns-System.Resources.Extensions.xml b/xml/ns-System.Resources.Extensions.xml
index f56138a2640..873fc992cbf 100644
--- a/xml/ns-System.Resources.Extensions.xml
+++ b/xml/ns-System.Resources.Extensions.xml
@@ -1,6 +1,6 @@
 <Namespace Name="System.Resources.Extensions">
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Provides classes that can read and write resources in a format that supports non-primitive objects.</summary>
     <remarks>To be added.</remarks>
   </Docs>
 </Namespace>