diff --git a/arch-install b/arch-install
index 452e971..d205abe 100755
--- a/arch-install
+++ b/arch-install
@@ -54,7 +54,9 @@ function secureumount() {
             # custom-mounts
             for wort in ${mountsnaps}
             do
-                umount ${mountpoint}${wort}
+                if cat /proc/mounts | grep ${mountpoint}${wort} > /dev/null; then
+                  umount ${mountpoint}${wort}
+                fi
             done
             umount ${mountpoint}
             umount /mnt/btrfs-root