diff --git a/tools/program.py b/tools/program.py
index 33bd35c23d0b6676edfb9c537e497eb68b828c4a..ad6fcbd9b5a1213e7e88ef7c82fde07ff29bcb80 100755
--- a/tools/program.py
+++ b/tools/program.py
@@ -197,9 +197,11 @@ def train(config,
         train_reader_cost = 0.0
         batch_sum = 0
         batch_start = time.time()
+        max_iter = len(train_dataloader) - 1 if platform.system(
+        ) == "Windows" else len(train_dataloader)
         for idx, batch in enumerate(train_dataloader):
             train_reader_cost += time.time() - batch_start
-            if idx >= len(train_dataloader):
+            if idx >= max_iter:
                 break
             lr = optimizer.get_lr()
             images = batch[0]