diff --git a/beginner_source/basics/optimization_tutorial.py b/beginner_source/basics/optimization_tutorial.py
index 82bfaa8f07..73cace5b33 100644
--- a/beginner_source/basics/optimization_tutorial.py
+++ b/beginner_source/basics/optimization_tutorial.py
@@ -163,7 +163,7 @@ def train_loop(dataloader, model, loss_fn, optimizer):
         optimizer.zero_grad()
 
         if batch % 100 == 0:
-            loss, current = loss.item(), batch * batch_size + len(X)
+            loss, current = loss.item(), batch * len(X)
             print(f"loss: {loss:>7f}  [{current:>5d}/{size:>5d}]")