diff --git a/apps/inm/serializers.py b/apps/inm/serializers.py
index caf3623f..1ea7604e 100644
--- a/apps/inm/serializers.py
+++ b/apps/inm/serializers.py
@@ -30,8 +30,8 @@ class MaterialBatchAListSerializer(CustomModelSerializer):
 class MaterialBatchSerializer(CustomModelSerializer):
     warehouse_name = serializers.CharField(
         source='warehouse.name', read_only=True)
-    material_name = serializers.CharField(
-        source='material.name', read_only=True)
+    material_name = serializers.StringRelatedField(
+        source='material', read_only=True)
     material_ = MaterialSerializer(source='material', read_only=True)
 
     class Meta: