--- cxterm/misc.c.orig	Tue Jan 17 02:57:48 1995
+++ cxterm/misc.c	Sat Aug 10 05:46:57 1996
@@ -34,6 +34,7 @@
  * SOFTWARE.
  */
 
+#include <sys/param.h>
 #include "ptyx.h"		/* X headers included here. */
 
 #include <X11/Xos.h>
@@ -796,8 +797,10 @@
 char *SysErrorMsg (n)
     int n;
 {
+#if !(defined(BSD) && (BSD >= 199306))
     extern char *sys_errlist[];
     extern int sys_nerr;
+#endif
 
     return ((n >= 0 && n < sys_nerr) ? sys_errlist[n] : "unknown error");
 }