diff --git a/include/zip.h b/include/zip.h
new file mode 100644
index 000000000..93f0a7dcc
--- /dev/null
+++ b/include/zip.h
@@ -0,0 +1,56 @@
+/************************************************************************
+ *   IRC - Internet Relay Chat, include/s_zip.h
+ *   Copyright (C) 1992 Darren Reed
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 1, or (at your option)
+ *   any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * "s_zip.h". - Headers file.
+ *
+ * $Id$
+ *
+ */
+#ifndef INCLUDED_s_zip_h
+#define INCLUDED_s_zip_h
+#include <zlib.h>         /* z_stream */
+#endif
+
+struct Client;
+
+#ifdef ZIP_LINKS
+/* the minimum amount of data needed to trigger compression */
+#define ZIP_MINIMUM     4096
+
+/* the maximum amount of data to be compressed (can actually be a bit more) */
+#define ZIP_MAXIMUM     8192    /* WARNING: *DON'T* CHANGE THIS!!!! */
+
+struct Zdata {
+  z_stream*   in;            /* input zip stream data */
+  z_stream*   out;           /* output zip stream data */
+  char        inbuf[ZIP_MAXIMUM]; /* incoming zipped buffer */
+  char        outbuf[ZIP_MAXIMUM]; /* outgoing (unzipped) buffer */
+  int         incount;        /* size of inbuf content */
+  int         outcount;       /* size of outbuf content */
+};
+
+#endif /* ZIP_LINKS */
+
+
+extern int     zip_init (struct Client *);
+extern void    zip_free (struct Client *);
+extern char*   unzip_packet (struct Client *, char *, int *);
+extern char*   zip_buffer (struct Client *, char *, int *, int);
+
+#endif /* INCLUDED_s_zip_h */