diff --git a/utils.sh b/utils.sh
index c0e9f2a..9ec6cd1 100755
--- a/utils.sh
+++ b/utils.sh
@@ -211,7 +211,7 @@ rebuild_base_containers()
 	lxc exec "$base_image_to_rebuild-tmp" -- /bin/bash -c "curl $INSTALL_SCRIPT | bash -s -- -a -d $ynh_version"
 	
 	# Run postinstall
-	lxc exec "$base_image_to_rebuild-tmp" -- /bin/bash -c "yunohost tools postinstall -d domain.tld -p the_password --ignore-dyndns"
+	lxc exec "$base_image_to_rebuild-tmp" -- /bin/bash -c "yunohost tools postinstall -d domain.tld -u syssa -F 'Syssa Mine' -p the_password --ignore-dyndns --force-diskspace"
 
 	rotate_image "$base_image_to_rebuild-tmp" "$base_image_to_rebuild-after-install"