diff --git a/protocol/wayland.xml b/protocol/wayland.xml
index 6171670e..0e51d832 100644
--- a/protocol/wayland.xml
+++ b/protocol/wayland.xml
@@ -502,6 +502,14 @@
   </interface>
 
   <interface name="wl_data_device_manager" version="1">
+    <description summary="desktop style meta data interface">
+      The wl_data_device_manager is a a singleton global object that
+      provides access to inter-client data transfer mechanisms such as
+      copy and paste and drag and drop.  These mechanisms are tied to
+      a wl_seat and this interface lets a client get a wl_data_device
+      corresponding to a wl_seat.
+    </description>
+
     <request name="create_data_source">
       <arg name="id" type="new_id" interface="wl_data_source"/>
     </request>