diff --git a/scripts/data/client2.py b/scripts/data/client2.py
index 60ccc3b2..209e3c83 100644
--- a/scripts/data/client2.py
+++ b/scripts/data/client2.py
@@ -27,7 +27,7 @@ def calculate_batch_weight(block_data):
     return sum(
         len(tx["inputs"]) + len(tx["outputs"])
         for block in block_data["blocks"]
-        for tx in block["transactions"]
+        for tx in block["data"]["transactions"]
     )
 
 # Generator function to create jobs