diff --git a/cpukit/rtems/ChangeLog b/cpukit/rtems/ChangeLog
index 872a271ea3..cc58bf5b38 100644
--- a/cpukit/rtems/ChangeLog
+++ b/cpukit/rtems/ChangeLog
@@ -1,3 +1,11 @@
+2005-03-17	Joel Sherrill <joel@OARcorp.com>
+
+	PR 692/rtems
+	* src/regiongetsegment.c, src/regionreturnsegment.c: The Region
+	Manager did not follow the proper protocol when blocking and
+	unblocking tasks waiting on buffers. This was a bug introduced with
+	the transition to an Allocation Mutex.
+
 2005-03-17      Joel Sherrill <joel@OARcorp.com>
 
 	PR 745/rtems
diff --git a/cpukit/rtems/src/regionreturnsegment.c b/cpukit/rtems/src/regionreturnsegment.c
index c9c134e02b..990fd5a714 100644
--- a/cpukit/rtems/src/regionreturnsegment.c
+++ b/cpukit/rtems/src/regionreturnsegment.c
@@ -104,8 +104,8 @@ rtems_status_code rtems_region_return_segment(
        *  NOTE: The following loop is O(n) where n is the number of
        *        threads whose memory request is satisfied.
        */
-      _RTEMS_Unlock_allocator();
       _Thread_Disable_dispatch();
+      _RTEMS_Unlock_allocator();
 
       for ( ; ; ) {
         the_thread = _Thread_queue_First( &the_region->Wait_queue );