diff --git a/modify.sh b/modify.sh
index 04e1fcd..c2c76eb 100644
--- a/modify.sh
+++ b/modify.sh
@@ -88,6 +88,7 @@ umount "$MOUNT_DIR"
 enable_rw_mount "$LOOP_DEV"p3
 mount "$LOOP_DEV"p3 "$MOUNT_DIR"
 cp "inshim.sh" "$MOUNT_DIR/usr/sbin/factory_install.sh"
+chmod +x "$MOUNT_DIR/usr/sbin/factory_install.sh"
 
 umount "$MOUNT_DIR"
 sync