diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index a8aa44a2..c64b4e49 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -84,7 +84,7 @@ class MlogbSerializer(CustomModelSerializer):
 
     class Meta:
         model = Mlogb
-        fields = ['id', 'material_out', 'count_ok']
+        fields = ['id', 'material_out', 'count_ok', 'material_out_']
 
 
 class MlogSerializer(CustomModelSerializer):