diff --git a/apps/qm/serializers.py b/apps/qm/serializers.py
index 4b12271b..80cee73f 100644
--- a/apps/qm/serializers.py
+++ b/apps/qm/serializers.py
@@ -67,7 +67,7 @@ class FtestItemSerializer(CustomModelSerializer):
     class Meta:
         model = FtestItem
         fields = '__all__'
-        read_only_fields = EXCLUDE_FIELDS_BASE
+        read_only_fields = EXCLUDE_FIELDS_BASE + ['ftest']
 
 
 class FtestSerializer(CustomModelSerializer):