diff --git a/src/data/grid-column.vue b/src/data/grid-column.vue
index 3ee3b24..4bec059 100644
--- a/src/data/grid-column.vue
+++ b/src/data/grid-column.vue
@@ -159,6 +159,7 @@
     },
 
     detached() {
+      if (!this.$parent) return;
       let columns = this.$parent.columns;
       if (columns) {
         let columnId = this.columnId;