diff --git a/plugins/view-resources/src/components/list/ListCategories.svelte b/plugins/view-resources/src/components/list/ListCategories.svelte
index b779d48138..3d63237729 100644
--- a/plugins/view-resources/src/components/list/ListCategories.svelte
+++ b/plugins/view-resources/src/components/list/ListCategories.svelte
@@ -85,7 +85,7 @@
           const f = await getResource(categoryFunc.action)
           const res = hierarchy.clone(await f(_class, query, groupByKey, update, queryId, $statusStore))
           if (res !== undefined) {
-            categories = res
+            categories = Array.from(new Set([...categories, ...res]))
             return
           }
         }