diff --git a/lemonldap-ng-manager/t/jsonfiles/12-modified.json b/lemonldap-ng-manager/t/jsonfiles/12-modified.json
index ac6d0d8b3..09394bbe8 100644
--- a/lemonldap-ng-manager/t/jsonfiles/12-modified.json
+++ b/lemonldap-ng-manager/t/jsonfiles/12-modified.json
@@ -1211,7 +1211,7 @@
       "id": "cookieExpiration",
       "title": "cookieExpiration",
       "type": "int",
-      "data": "a"
+      "data": 0
     }]
   }, {
     "id": "sessionParams",