diff --git a/ChangeLog b/ChangeLog
index 0c986d4c0..8626eee63 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+20081209
+ - (djm) OpenBSD CVS Sync
+   - djm@cvs.openbsd.org 2008/12/09 02:38:18
+     [clientloop.c]
+     The ~C escape handler does not work correctly for multiplexed sessions -
+     it opens a commandline on the master session, instead of on the slave
+     that requested it. Disable it on slave sessions until such time as it
+     is fixed; bz#1543 report from Adrian Bridgett via Colin Watson
+     ok markus@
+
 20081208
  - (djm) [configure.ac] bz#1538: better test for ProPolice/SSP: actually
    use some stack in main().
@@ -4964,5 +4974,5 @@
    OpenServer 6 and add osr5bigcrypt support so when someone migrates
    passwords between UnixWare and OpenServer they will still work. OK dtucker@
 
-$Id: ChangeLog,v 1.5151 2008/12/07 22:55:25 djm Exp $
+$Id: ChangeLog,v 1.5152 2008/12/09 03:11:32 djm Exp $
 
diff --git a/clientloop.c b/clientloop.c
index df4545828..0d228421c 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.205 2008/12/02 19:01:07 markus Exp $ */
+/* $OpenBSD: clientloop.c,v 1.206 2008/12/09 02:38:18 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1042,7 +1042,6 @@ process_escapes(Channel *c, Buffer *bin, Buffer *bout, Buffer *berr,
 Supported escape sequences:\r\n\
   %c.  - terminate session\r\n\
   %cB  - send a BREAK to the remote system\r\n\
-  %cC  - open a command line\r\n\
   %cR  - Request rekey (SSH protocol 2 only)\r\n\
   %c#  - list forwarded connections\r\n\
   %c?  - this message\r\n\
@@ -1051,8 +1050,7 @@ Supported escape sequences:\r\n\
 					    escape_char, escape_char,
 					    escape_char, escape_char,
 					    escape_char, escape_char,
-					    escape_char, escape_char,
-					    escape_char);
+					    escape_char, escape_char);
 				} else {
 					snprintf(string, sizeof string,
 "%c?\r\n\
@@ -1087,6 +1085,8 @@ Supported escape sequences:\r\n\
 				continue;
 
 			case 'C':
+				if (c && c->ctl_fd != -1)
+					goto noescape;
 				process_cmdline();
 				continue;