diff --git a/server/vbv_lernwelt/iam/permissions.py b/server/vbv_lernwelt/iam/permissions.py
index 7a8e5db5..9089ea39 100644
--- a/server/vbv_lernwelt/iam/permissions.py
+++ b/server/vbv_lernwelt/iam/permissions.py
@@ -258,10 +258,10 @@ def is_circle_expert_by_circle_id(
         return True
 
     is_supervisor = (
-        CourseSessionGroup.objects.filter(
+        check_supervisor
+        and CourseSessionGroup.objects.filter(
             supervisor=user, course_session__id=course_session_id
         ).exists()
-        and check_supervisor
     )
 
     is_expert = CourseSessionUser.objects.filter(