diff --git a/include/getopt.h b/include/getopt.h
index c29ad4203a76..39b514ef9b2a 100644
--- a/include/getopt.h
+++ b/include/getopt.h
@@ -72,7 +72,11 @@ int	 getopt(int, char * const [], const char *);
 
 extern char *optarg;			/* getopt(3) external variables */
 extern int optind, opterr, optopt;
-#endif /* _GETOPT_DECLARED */
+#endif
+#ifndef _OPTRESET_DECLARED
+#define	_OPTRESET_DECLARED
+extern int optreset;			/* getopt(3) external variable */
+#endif
 __END_DECLS
  
 #endif /* !_GETOPT_H_ */
diff --git a/include/unistd.h b/include/unistd.h
index 8901f935cac5..0331308bea83 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -542,7 +542,10 @@ int	 undelete(const char *);
 int	 unwhiteout(const char *);
 void	*valloc(size_t);			/* obsoleted by malloc() */
 
+#ifndef _OPTRESET_DECLARED
+#define	_OPTRESET_DECLARED
 extern int optreset;			/* getopt(3) external variable */
+#endif
 #endif /* __BSD_VISIBLE */
 __END_DECLS