diff --git a/backend/ticket/serializers.py b/backend/ticket/serializers.py
index 7a82e83..813506e 100644
--- a/backend/ticket/serializers.py
+++ b/backend/ticket/serializers.py
@@ -19,10 +19,14 @@ class AttachmentSerializer(serializers.ModelSerializer):
         return obj.file.url
 
 class MessageSerializer(serializers.ModelSerializer):
+    is_user = serializers.SerializerMethodField(read_only=True)
     class Meta:
         model = Message
         exclude = ('sender', )
         extra_kwargs = {'ticket': {'write_only': True}}
+    def get_is_user(self, obj):
+        user = self.context['request'].user
+        return user == obj.sender
 
 class MessageForTicketSerializer(serializers.ModelSerializer):
     class Meta: