diff --git a/packages/nc-gui-v2/pages/projects/index/create-external.vue b/packages/nc-gui-v2/pages/projects/index/create-external.vue
index 7a6009cbfc..bf2bf742ea 100644
--- a/packages/nc-gui-v2/pages/projects/index/create-external.vue
+++ b/packages/nc-gui-v2/pages/projects/index/create-external.vue
@@ -189,7 +189,15 @@ const testConnection = async () => {
   }
 }
 
+// hide sidebar
 $state.sidebarOpen.value = false
+
+// reset test status on config change
+watch(
+  () => formState.dataSource,
+  () => (testSuccess.value = false),
+  { deep: true },
+)
 </script>
 
 <template>