diff --git a/packages/x-components/src/x-modules/search/components/sort-picker-list.vue b/packages/x-components/src/x-modules/search/components/sort-picker-list.vue
index 8ce38d1b50..25abd48145 100644
--- a/packages/x-components/src/x-modules/search/components/sort-picker-list.vue
+++ b/packages/x-components/src/x-modules/search/components/sort-picker-list.vue
@@ -12,7 +12,7 @@
       :class="[cssClasses, buttonClass]"
       data-test="sort-picker-button"
       :events="event"
-      :aria-pressed="(item === selectedSort).toString()"
+      :aria-pressed="item === selectedSort || null"
       role="listitem"
     >
       <slot v-bind="{ item, isSelected: item === selectedSort }">