diff --git a/winsup/utils/ChangeLog b/winsup/utils/ChangeLog
index 10fe823ea..17dc14f36 100644
--- a/winsup/utils/ChangeLog
+++ b/winsup/utils/ChangeLog
@@ -1,3 +1,7 @@
+2006-02-17  Jerry D. Hedden  <jerry@hedden.us>
+
+	* ps.cc (main): Set aflag if -p option is given.
+
 2006-02-16  Jerry D. Hedden  <jerry@hedden.us>
 
 	* ps.cc (longopts): Add --process option.
diff --git a/winsup/utils/ps.cc b/winsup/utils/ps.cc
index 27203d0c7..651175144 100644
--- a/winsup/utils/ps.cc
+++ b/winsup/utils/ps.cc
@@ -286,6 +286,7 @@ main (int argc, char *argv[])
 	break;
       case 'p':
 	proc_id = atoi (optarg);
+	aflag = 1;
 	break;
       case 's':
 	sflag = 1;