diff --git a/src/modules/Gz/zlibmod.c b/src/modules/Gz/zlibmod.c
index a347394ff1e8598de1fe7f002d35ab79b497e59c..71d1a0a0de9ebae7af63628c39531277d3861c6d 100644
--- a/src/modules/Gz/zlibmod.c
+++ b/src/modules/Gz/zlibmod.c
@@ -4,7 +4,7 @@
 ||| See the files COPYING and DISCLAIMER for more information.
 \*/
 #include "global.h"
-RCSID("$Id: zlibmod.c,v 1.11 1997/10/12 18:36:53 grubba Exp $");
+RCSID("$Id: zlibmod.c,v 1.12 1997/10/14 01:12:23 grubba Exp $");
 
 #include "zlib_machine.h"
 
@@ -380,8 +380,8 @@ void pike_module_init(void)
 
 #ifdef HAVE___VTBL__9TYPE_INFO
 /* Super-special kluge for IRIX 6.3 */
-extern void __vtbl__9type_info();
-void zlibmod_strap_kluge()
+extern void __vtbl__9type_info(void);
+void zlibmod_strap_kluge(void)
 {
   __vtbl__9type_info();
 }