diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index fab7e82f41..717d8834f3 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2010-12-29  Joel Brobecker  <brobecker@adacore.com>
+
+	* target.h (enum target_object): Expand the documentation of
+	TARGET_OBJECT_OSDATA a bit.
+
 2010-12-28  Michael Snyder  <msnyder@vmware.com>
 
 	* command.h: Comment clean-up.
diff --git a/gdb/target.h b/gdb/target.h
index ea27b2ce31..6a1ec926ff 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -256,7 +256,8 @@ enum target_object
   /* Currently loaded libraries, in XML format.  */
   TARGET_OBJECT_LIBRARIES,
   /* Get OS specific data.  The ANNEX specifies the type (running
-     processes, etc.).  */
+     processes, etc.).  The data being transfered is expected to follow
+     the DTD specified in features/osdata.dtd.  */
   TARGET_OBJECT_OSDATA,
   /* Extra signal info.  Usually the contents of `siginfo_t' on unix
      platforms.  */