diff --git a/apps/showcase/doc/passthrough/DeclarativeDoc.vue b/apps/showcase/doc/passthrough/DeclarativeDoc.vue
index 8543dd875..a09f9a87d 100644
--- a/apps/showcase/doc/passthrough/DeclarativeDoc.vue
+++ b/apps/showcase/doc/passthrough/DeclarativeDoc.vue
@@ -25,7 +25,7 @@ export default {
 <Panel
     :pt="{
         root: {
-            class='"border-1 border-solid'
+            class: 'border-1 border-solid'
         },
         header: {
             'data-test-id': 'testid',