diff --git a/assignment-2/handout-1/tester_demo.py b/assignment-2/handout-1/tester_demo.py
index 563de6b306d6a967c9a2a189c917cb858e7be4fe..e7ae741074bf8923a04cbb24fe2f9abbbd928df7 100644
--- a/assignment-2/handout-1/tester_demo.py
+++ b/assignment-2/handout-1/tester_demo.py
@@ -6,7 +6,7 @@ from numpy_fnn import Matmul, Relu, Softmax, Log, NumpyModel
 from torch_mnist import TorchModel
 from utils import get_torch_initialization, one_hot
 
-err_epsilon = 1e-3
+err_epsilon = 1e-5 #modified
 err_p = 0.4
 
 
@@ -140,7 +140,7 @@ def test_model():
     
     try:
         
-        numpy_model.backward(y2)
+        numpy_model.backward(-10*y2) #modified
         
         check_flag_2 = [
             check_result(numpy_model.log_grad, torch_model.log.grad),