diff --git a/src/pages/Index.vue b/src/pages/Index.vue
index 00b4f7ba0fce78156985d4e3834f86e4fc50e4cd..6acd1f22e411824914a4d75c8bb732e5dcd0d73f 100644
--- a/src/pages/Index.vue
+++ b/src/pages/Index.vue
@@ -192,7 +192,7 @@ export default defineComponent({
       const onRejected = function(rejectedEntries) {
         $q.notify({
           type: 'negative',
-          message: `${rejectedEntries[0].file.name} file(s) did not pass validation constraints`
+          message: `${rejectedEntries[0].file.name}-file did not pass validation constraints. The file is either too big or not a valid JSON.`
         });
       };