diff --git a/hooks/post_user_delete b/hooks/post_user_delete
index 1091b70..5ac3e13 100644
--- a/hooks/post_user_delete
+++ b/hooks/post_user_delete
@@ -2,7 +2,7 @@
 source /usr/share/yunohost/helpers
 
 user=$1
-app=$YNH_APP_INSTANCE_NAME
+app="ynhzabbix"
 
 db_name=$(ynh_app_setting_get $app db_name)
 db_user=$(ynh_app_setting_get $app db_user)