diff --git a/cipher/ChangeLog b/cipher/ChangeLog
index 2441614e3..0455fc5a8 100644
--- a/cipher/ChangeLog
+++ b/cipher/ChangeLog
@@ -1,3 +1,7 @@
+2003-04-15  Werner Koch  <wk@gnupg.org>
+
+	* md.c (md_start_debug): Need to open the file in binary mode.
+
 2003-02-21  David Shaw  <dshaw@jabberwocky.com>
 
 	* cipher.c (setup_cipher_table): #ifdef all optional ciphers.
diff --git a/cipher/md.c b/cipher/md.c
index 0e5f5f8cd..b5185bd92 100644
--- a/cipher/md.c
+++ b/cipher/md.c
@@ -1,5 +1,5 @@
 /* md.c  -  message digest dispatcher
- *	Copyright (C) 1998, 1999, 2002 Free Software Foundation, Inc.
+ *	Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
  *
  * This file is part of GnuPG.
  *
@@ -522,7 +522,7 @@ md_start_debug( MD_HANDLE md, const char *suffix )
     }
     idx++;
     sprintf(buf, "dbgmd-%05d" EXTSEP_S "%.10s", idx, suffix );
-    md->debug = fopen(buf, "w");
+    md->debug = fopen(buf, "wb");
     if( !md->debug )
 	log_debug("md debug: can't open %s\n", buf );
 }