diff --git a/scripts/change_url b/scripts/change_url
index 7b4dc0f..06933b6 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -106,7 +106,6 @@ yunohost service start $app
 ynh_backup_if_checksum_is_different "$final_path/$app/.env"
 # Recalculate and store the checksum of the file for the next upgrade.
 ynh_store_file_checksum "$final_path/$app/.env"
-ynh_store_file_checksum "$final_path/$app/.env"
 
 #=================================================
 # GENERIC FINALISATION
diff --git a/scripts/install b/scripts/install
index 60c9c3a..3d969e9 100755
--- a/scripts/install
+++ b/scripts/install
@@ -158,7 +158,7 @@ ynh_add_nginx_config
 #=================================================
 
 # Create a system user
-ynh_system_user_create $app $final_path
+ynh_system_user_create "$app" "$final_path"
 
 #=================================================
 # PHP-FPM CONFIGURATION
diff --git a/scripts/restore b/scripts/restore
index 3be1332..b334bd7 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -72,7 +72,7 @@ ynh_psql_execute_file_as_root ./db.sql "$db_name"
 #=================================================
 
 # Create the dedicated user (if not existing)
-ynh_system_user_create $app "$final_path"
+ynh_system_user_create "$app" "$final_path"
 
 #=================================================
 # RESTORE USER RIGHTS