diff --git a/src/components/datatable/DataTable.vue b/src/components/datatable/DataTable.vue
index 02d9e52b0..28340a84b 100644
--- a/src/components/datatable/DataTable.vue
+++ b/src/components/datatable/DataTable.vue
@@ -71,7 +71,7 @@ export default {
         };
     },
     mounted() {
-        this.columns = this.$children;
+        this.columns = [...this.$children];
     },
     methods: {
         getRowKey(rowData, index) {