diff --git a/store/serializers.py b/store/serializers.py
index ee57ca5..35076c3 100644
--- a/store/serializers.py
+++ b/store/serializers.py
@@ -64,7 +64,7 @@ class ChecklistImageListSerializer(serializers.ListSerializer):
 
 class ChecklistSerializer(serializers.ModelSerializer):
     id = serializers.CharField(read_only=True)
-    managerid = serializers.CharField(source='manager.id', read_only=True)
+    managerid = serializers.PrimaryKeyRelatedField(source='manager.id', read_only=True, allow_null=True)
     link = serializers.URLField(source='product_link', required=False)
     category = serializers.SlugRelatedField(slug_field='slug', queryset=Category.objects.all())