diff --git a/manifest.json b/manifest.json
index 23d1d2d..2c4c9cd 100644
--- a/manifest.json
+++ b/manifest.json
@@ -7,7 +7,7 @@
 		"fr": "Méta-moteur de recherche respectueux de la vie privée et bidouillable", 
 		"de": "Meta-Suchmaschine, die den Privatsphäre wahrt und 'hackable' ist."
 	},
-	"version": "0.18.0~ynh2",
+	"version": "0.18.0~ynh3",
 	"url": "https://searx.github.io/searx/",
 	"license": "AGPL-3.0-or-later",
 	"maintainer": {
diff --git a/scripts/install b/scripts/install
index 323576c..35afa76 100644
--- a/scripts/install
+++ b/scripts/install
@@ -54,7 +54,7 @@ ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 #=================================================
 # INSTALL DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Installing dependencies..." --weight=35
+ynh_script_progression --message="Installing dependencies..." --weight=2
 
 ynh_install_app_dependencies $pkg_dependencies
 
@@ -117,7 +117,7 @@ ynh_store_file_checksum --file="$final_path/searx/settings.yml"
 # SET PERMISSIONS ON SEARX DIRECTORY
 #=================================================
 
-chown -R $app: "$final_path"
+chown -R $app: $final_path
 
 #=================================================
 # CONFIGURE UWSGI FOR SEARX
@@ -139,12 +139,12 @@ ynh_systemd_action --service_name=uwsgi-app@$app.service --action=start --line_m
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_script_progression --message="Configuring SSOwat..." --weight=2
+ynh_script_progression --message="Configuring permissions..." --weight=2
 
 # Make app public if necessary or protect it
 if [ $is_public -eq 1 ]
 then
-	ynh_permission_update --permission "main" --add "visitors"
+	ynh_permission_update --permission="main" --add="visitors"
 fi
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 0caaa3c..c35e989 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -47,6 +47,13 @@ if [ -z "$final_path" ]; then
 	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
+# Cleaning legacy permissions
+if ynh_legacy_permissions_exists; then
+	ynh_legacy_permissions_delete_all
+
+	ynh_app_setting_delete --app=$app --key=is_public
+fi
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================