diff --git a/webapp/components/Group/GroupTeaser.vue b/webapp/components/Group/GroupTeaser.vue
index 7e6523048..87c625c73 100644
--- a/webapp/components/Group/GroupTeaser.vue
+++ b/webapp/components/Group/GroupTeaser.vue
@@ -44,7 +44,10 @@
           </ds-chip>
         </div>
         <!-- group categories -->
-        <div class="categories" v-if="categoriesActive && group.categories.length > 0">
+        <div
+          class="categories"
+          v-if="categoriesActive && group.categories && group.categories.length > 0"
+        >
           <category
             v-for="category in group.categories"
             :key="category.id"
diff --git a/webapp/components/PostTeaser/PostTeaser.vue b/webapp/components/PostTeaser/PostTeaser.vue
index a84c8475c..a0d680dee 100644
--- a/webapp/components/PostTeaser/PostTeaser.vue
+++ b/webapp/components/PostTeaser/PostTeaser.vue
@@ -53,7 +53,10 @@
         class="footer"
         v-observe-visibility="(isVisible, entry) => visibilityChanged(isVisible, entry, post.id)"
       >
-        <div class="categories" v-if="categoriesActive && post.categories.length > 0">
+        <div
+          class="categories"
+          v-if="categoriesActive && post.categories && post.categories.length > 0"
+        >
           <category
             v-for="category in post.categories"
             :key="category.id"