diff --git a/ChangeLog b/ChangeLog
index 1e173fec3..4e39326b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -148,6 +148,9 @@
      fall back to creating a new TCP connection on most multiplexing errors
      (socket connect fail, invalid version, refused permittion, corrupted
      messages, etc.); bz #1329 ok dtucker@
+   - dtucker@cvs.openbsd.org 2008/06/13 00:47:53
+     [mux.c]
+     upcast size_t to u_long to match format arg; ok djm@
   - (dtucker) [clientloop.c serverloop.c]  channel_register_filter now
     takes 2 more args.  with djm@
   - (dtucker) [defines.h] Bug #1112: __dead is, well dead. Based on a patch
@@ -4314,4 +4317,4 @@
    OpenServer 6 and add osr5bigcrypt support so when someone migrates
    passwords between UnixWare and OpenServer they will still work. OK dtucker@
 
-$Id: ChangeLog,v 1.4996 2008/06/13 00:28:57 dtucker Exp $
+$Id: ChangeLog,v 1.4997 2008/06/13 00:58:10 dtucker Exp $
diff --git a/mux.c b/mux.c
index aaa3a4ee2..ce3015c3f 100644
--- a/mux.c
+++ b/mux.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: mux.c,v 1.5 2008/06/13 00:16:49 djm Exp $ */
+/* $OpenBSD: mux.c,v 1.6 2008/06/13 00:47:53 dtucker Exp $ */
 /*
  * Copyright (c) 2002-2008 Damien Miller <djm@openbsd.org>
  *
@@ -711,7 +711,7 @@ muxclient(const char *path)
 	leave_raw_mode();
 	if (i > (int)sizeof(int))
 		fatal("%s: master returned too much data (%d > %lu)",
-		    __func__, i, sizeof(int));
+		    __func__, i, (u_long)sizeof(int));
 	if (muxclient_terminate) {
 		debug2("Exiting on signal %d", muxclient_terminate);
 		exitval[0] = 255;