diff --git a/components/lib/basecomponent/BaseComponent.vue b/components/lib/basecomponent/BaseComponent.vue
index fa6ec8589..d9ad7e7d7 100644
--- a/components/lib/basecomponent/BaseComponent.vue
+++ b/components/lib/basecomponent/BaseComponent.vue
@@ -555,7 +555,7 @@ export default {
             return this._getPT(this.$config?.pt, undefined, (value) => this._getOptionValue(value, this.$name, { ...this.$params }) || ObjectUtils.getItemValue(value, { ...this.$params }));
         },
         isUnstyled() {
-            return this.unstyled !== undefined ? this.unstyled : this.$config.unstyled;
+            return this.unstyled !== undefined ? this.unstyled : this.$config?.unstyled;
         },
         $params() {
             return { instance: this, props: this.$props, state: this.$data, parentInstance: this.$parentInstance };