diff --git a/scripts/upgrade b/scripts/upgrade
index a8155a4..8459550 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -79,9 +79,8 @@ if [[ $migration_process -eq 1 ]]; then
 	final_path="/var/www/$app"
 
     # Replace the user
-    pkill -u $old_app
-    ynh_system_user_delete $old_app
-        ynh_system_user_create --username=$app --home_dir="$final_path"
+    ynh_system_user_delete --username="$old_app"
+        ynh_system_user_create --username="$app" --home_dir="$final_path"
 fi
 
 #=================================================