diff --git a/src/js/yunohost/controllers/users.js b/src/js/yunohost/controllers/users.js
index a1a218b4..92e235ad 100644
--- a/src/js/yunohost/controllers/users.js
+++ b/src/js/yunohost/controllers/users.js
@@ -201,7 +201,7 @@
 
         // make confirm content
         var purgeCheckbox = '<div><input type="checkbox" id="purge-user-data" name="purge-user-data"> <label for="purge-user-data">'+ y18n.t('purge_user_data_checkbox', [c.params['user']]) +'</label></div>';
-        var purgeAlertMessage = '<div class="warning" style="display: none">⚠ '+ y18n.t('purge_user_data_warning') +'</div>';
+        var purgeAlertMessage = '<div class="danger" style="display: none">⚠ '+ y18n.t('purge_user_data_warning') +'</div>';
         var confirmModalContent = $('<div>'+ y18n.t('confirm_delete', [c.params['user']]) +'<br><br>'+ purgeCheckbox +'<br>'+ purgeAlertMessage +'</div>');
 
         // display confirm modal