diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index b1c7f3af1..c5b27cf7a 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2009-10-07  Corinna Vinschen  <corinna@vinschen.de>
+
+	* syscalls.cc (seteuid32): Call set_cygwin_privileges on primary token
+	as well.
+
 2009-10-07  Corinna Vinschen  <corinna@vinschen.de>
 
 	* fhandler.h (fhandler_pty_master::tcgetpgrp): Declare.
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index c9767faf8..1529cb66b 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -2805,6 +2805,7 @@ seteuid32 (__uid32_t uid)
 	  cygheap->user.curr_primary_token = NO_IMPERSONATION;
 	  return -1;
 	}
+      set_cygwin_privileges (cygheap->user.curr_primary_token);
       set_cygwin_privileges (cygheap->user.curr_imp_token);
     }
   if (!cygheap->user.reimpersonate ())