diff --git a/frontend/src/components/SubResult.vue b/frontend/src/components/SubResult.vue
index 9b7751f..3c1dfea 100644
--- a/frontend/src/components/SubResult.vue
+++ b/frontend/src/components/SubResult.vue
@@ -74,7 +74,7 @@ function get_background_color(label: string | undefined) {
     </div>
   <div v-else>
     <div class="rvo-accordion">
-    <details class="rvo-accordion__item" open="">
+    <details class="rvo-accordion__item" open="true">
       <summary class="rvo-accordion__item-summary">
         <h3
           class="utrecht-heading-3 rvo-accordion__item-title rvo-heading--no-margins rvo-heading--mixed items-center"