diff --git a/server/vbv_lernwelt/dashboard/graphql/types/dashboard.py b/server/vbv_lernwelt/dashboard/graphql/types/dashboard.py
index aa75f832..3b3f11f7 100644
--- a/server/vbv_lernwelt/dashboard/graphql/types/dashboard.py
+++ b/server/vbv_lernwelt/dashboard/graphql/types/dashboard.py
@@ -149,16 +149,14 @@ class CourseStatisticsType(graphene.ObjectType):
             course_id=root.course_id,
         ).count()
 
-        expert_count = CourseSession.objects.filter(
-            id__in=root.course_session_selection_ids,
-            course_id=root.course_id,
-            coursesessionuser__role=CourseSessionUser.Role.EXPERT,
+        expert_count = CourseSessionUser.objects.filter(
+            course_session_id__in=root.course_session_selection_ids,
+            role=CourseSessionUser.Role.EXPERT,
         ).count()
 
-        participant_count = CourseSession.objects.filter(
-            id__in=root.course_session_selection_ids,
-            course_id=root.course_id,
-            coursesessionuser__role=CourseSessionUser.Role.MEMBER,
+        participant_count = CourseSessionUser.objects.filter(
+            course_session_id__in=root.course_session_selection_ids,
+            role=CourseSessionUser.Role.MEMBER,
         ).count()
 
         return StatisticsCourseSessionsSelectionMetricType(