--- ../busybox-1.23.2.orig/util-linux/swaponoff.c	2015-03-23 06:07:19.000000000 +0300
+++ ./util-linux/swaponoff.c	2015-09-24 19:03:34.972210378 +0300
@@ -178,7 +178,11 @@
 			/* swapon -a should ignore entries with noauto,
 			 * but swapoff -a should process them
 			 */
-			if (do_swapoff || hasmntopt(m, MNTOPT_NOAUTO) == NULL) {
+			if (do_swapoff
+#ifdef MNTOPT_NOAUTO
+ || hasmntopt(m, MNTOPT_NOAUTO) == NULL
+#endif
+) {
 				/* each swap space might have different flags */
 				/* save global flags for the next round */
 				save_g_flags();