diff --git a/arm64-build.sh b/arm64-build.sh
index 4f90375..e3a6089 100755
--- a/arm64-build.sh
+++ b/arm64-build.sh
@@ -28,5 +28,5 @@ systemctl enable ssh
 echo "kenoma" > /etc/hostname
 EOT
 
-sudo umount mnt
+umount mnt
 xz $RASPIOS_IMG