diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index e6686163b..0dee5fcd0 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2005-01-06  Christopher Faylor  <cgf@timesys.com>
+
+	* timer.cc (timer_thread): Pass sigev pointer value as per SuSv3 rather
+	than pointer to sigev.
+
 2005-01-05  Christopher Faylor  <cgf@timesys.com>
 
 	* dcrt0.cc (multiple_cygwin_problem): Reorganize error message to not
diff --git a/winsup/cygwin/timer.cc b/winsup/cygwin/timer.cc
index e7ce45a32..fc234d835 100644
--- a/winsup/cygwin/timer.cc
+++ b/winsup/cygwin/timer.cc
@@ -133,7 +133,7 @@ timer_thread (VOID *x)
 	    debug_printf ("%p starting thread", x);
 	    int rc = pthread_create (&notify_thread, tt.evp.sigev_notify_attributes,
 				     (void * (*) (void *)) tt.evp.sigev_notify_function,
-				     &tt.evp.sigev_value);
+				     tt.evp.sigev_value.sival_ptr);
 	    if (rc)
 	      {
 		debug_printf ("thread creation failed, %E");