diff --git a/backend/services/adminService.js b/backend/services/adminService.js
index 8514f21..15830f4 100644
--- a/backend/services/adminService.js
+++ b/backend/services/adminService.js
@@ -454,7 +454,11 @@ class AdminService {
             ],
             include: [
                 { model: RoomType, as: 'roomType' },
-                { model: UserParamValue, as: 'genderRestriction' },
+                { 
+                    model: UserParamValue, 
+                    as: 'genderRestriction',
+                    required: false // Wichtig: required: false, damit auch Räume ohne genderRestriction geladen werden
+                },
             ]
         });
     }