diff --git a/README.md b/README.md
index 6dd6d36..d9b00bc 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ export CUDA_VISIBLE_DEVICES=
 
 
 ```
+mkdir log_synthetic
 bash run_fedavg.sh synthetic_iid 0 | tee log_synthetic/synthetic_iid_client10_epoch20_mu0
 bash run_fedprox.sh synthetic_iid 0 1 | tee log_synthetic/synthetic_iid_client10_epoch20_mu1
 bash run_fedavg.sh synthetic_0_0 0 | tee log_synthetic/synthetic_0_0_client10_epoch20_mu0
diff --git a/data/nist/data/my_sample.py b/data/nist/data/my_sample.py
index 42b27f9..384ae65 100644
--- a/data/nist/data/my_sample.py
+++ b/data/nist/data/my_sample.py
@@ -57,7 +57,9 @@ def main():
 
 
     for class_ in os.listdir(file_dir):
-
+        if class_ == ".DS_Store":
+            continue
+            
         real_class = relabel_class(class_)
         if real_class >= 36 and real_class <= 45:
             full_img_path = file_dir + "/" + class_ + "/train_" + class_
diff --git a/data/synthetic_iid/README.md b/data/synthetic_iid/README.md
index 536c67d..cfbba39 100644
--- a/data/synthetic_iid/README.md
+++ b/data/synthetic_iid/README.md
@@ -1,3 +1,3 @@
 ```
-python generate_synthetic.py
-```
\ No newline at end of file
+python generate_iid.py
+```