--- Gnu-Mach/device/if_ether.h	2020/09/02 04:43:03	1.1.1.2
+++ Gnu-Mach/device/if_ether.h	2020/09/02 04:45:33	1.1.1.3
@@ -51,7 +51,7 @@ struct	ether_header {
 #ifdef	KERNEL
 u_char	etherbroadcastaddr[6];
 
-extern char *	ether_sprintf();
+extern char *	ether_sprintf(u_char *);
 #endif	/* KERNEL */
 
 #endif	/*_DEVICE_IF_ETHER_H_*/