diff --git a/server/vbv_lernwelt/dashboard/graphql/types/competence.py b/server/vbv_lernwelt/dashboard/graphql/types/competence.py
index bc682ca2..dc00f167 100644
--- a/server/vbv_lernwelt/dashboard/graphql/types/competence.py
+++ b/server/vbv_lernwelt/dashboard/graphql/types/competence.py
@@ -50,7 +50,7 @@ def competences(
         completions = completions.filter(user_id__in=user_selection_ids)
 
     page_ids = completions.values_list("page_id", flat=True).distinct()
-    pages = Page.objects.filter(id__in=page_ids)
+    pages = Page.objects.filter(id__in=page_ids).specific()
     learning_units = {page.id: page.specific.learning_unit for page in pages}
 
     circles = {