diff --git a/train.py b/train.py
index f12ba49f..71438d1b 100644
--- a/train.py
+++ b/train.py
@@ -76,7 +76,7 @@ def train(
 
     if multi_scale:
         img_size = round((img_size / 32) * 1.5) * 32  # initiate with maximum multi_scale size
-        # opt.num_workers = 0  # bug https://github.com/ultralytics/yolov3/issues/174
+        opt.num_workers = 0  # bug https://github.com/ultralytics/yolov3/issues/174
     else:
         torch.backends.cudnn.benchmark = True  # unsuitable for multiscale