diff --git a/util/options/build_opt_tbl.c b/util/options/build_opt_tbl.c
index a6b5cd3062..c5a4b7b777 100644
--- a/util/options/build_opt_tbl.c
+++ b/util/options/build_opt_tbl.c
@@ -1,6 +1,5 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <sys/io.h>
 #include <string.h>
 #include <ctype.h>
 #include <errno.h>