diff --git a/packages/nc-gui/components/smartsheet/column/DefaultValue.vue b/packages/nc-gui/components/smartsheet/column/DefaultValue.vue
index 5fdf44c7eb..13a777368a 100644
--- a/packages/nc-gui/components/smartsheet/column/DefaultValue.vue
+++ b/packages/nc-gui/components/smartsheet/column/DefaultValue.vue
@@ -27,8 +27,8 @@ const cdfValue = ref<string | null>(null)
 const editEnabled = ref(false)
 
 const updateCdfValue = (cdf: string | null) => {
-  vModel.value.cdf = cdf
-  cdfValue.value = vModel.value.cdf
+  vModel.value = { ...vModel.value, cdf }
+  cdfValue.value = cdf
 }
 
 onMounted(() => {