diff --git a/src/api/v1/users/serializers.py b/src/api/v1/users/serializers.py
index e0e80c5..cb2a1de 100644
--- a/src/api/v1/users/serializers.py
+++ b/src/api/v1/users/serializers.py
@@ -34,7 +34,9 @@ def get_invited(self, obj):
 
         This method retrieves the list of users invited by the current user.
         """
-        invited_users = User.objects.filter(invited_by_code=obj.invite_code)
+        invited_users = User.objects.filter(
+            invited_by_code__iexact=obj.invite_code
+        )
         invited_serializer = InvitedUserSerializer(invited_users, many=True)
         return invited_serializer.data