--- sys/unix/unixunix.c.orig	Fri Jul 24 19:06:13 1998
+++ sys/unix/unixunix.c	Fri Jul 24 19:06:05 1998
@@ -38,7 +38,9 @@
  * does not exist on all systems, and moreover, that it sometimes includes
  * <sys/types.h> again, so that the compiler sees these typedefs twice.
  */
+#ifndef HAVE_SYS_PARAM_H
 #define		MAXPATHLEN	1024
+#endif
 
 	register const char *np, *path;
 	char filename[MAXPATHLEN+1];
