diff --git a/enhancer/data/dataset.py b/enhancer/data/dataset.py
index fb4d04c..a8b3896 100644
--- a/enhancer/data/dataset.py
+++ b/enhancer/data/dataset.py
@@ -353,8 +353,11 @@ class EnhancerDataset(TaskDataset):
         }
 
     def train__len__(self):
-
-        return sum([len(item) for item in self.train_data]) // self.batch_size
+        worker_info = torch.utils.data.get_worker_info()
+        num_workers = worker_info.num_workers if worker_info else 1
+        return sum([len(item) for item in self.train_data]) // (
+            self.batch_size * num_workers
+        )
 
     def val__len__(self):
         return len(self._validation)