diff --git a/zoobot/pytorch/training/webdatamodule.py b/zoobot/pytorch/training/webdatamodule.py
index ae23d2d6..dd01bad6 100644
--- a/zoobot/pytorch/training/webdatamodule.py
+++ b/zoobot/pytorch/training/webdatamodule.py
@@ -14,10 +14,10 @@ class WebDataModule(pl.LightningDataModule):
     def __init__(self, train_urls, val_urls, train_size=None, val_size=None, label_cols=None, batch_size=64, num_workers=4, cache_dir=None):
         super().__init__()
 
-        if isinstance(train_urls, types.GeneratorType):
-            train_urls = list(train_urls)
-        if isinstance(val_urls, types.GeneratorType):
-            val_urls = list(val_urls)
+        # if isinstance(train_urls, types.GeneratorType):
+        #     train_urls = list(train_urls)
+        # if isinstance(val_urls, types.GeneratorType):
+        #     val_urls = list(val_urls)
         self.train_urls = train_urls
         self.val_urls = val_urls
 
@@ -135,9 +135,10 @@ def val_dataloader(self):
     #     return parser
 
 def nodesplitter_func(urls):
+    print(urls)
     try:
         node_id, node_count = torch.distributed.get_rank(), torch.distributed.get_world_size()
-        return urls[node_id::node_count]
+        return list(urls)[node_id::node_count]
     except RuntimeError:
         print('Distributed not initialised. Hopefully single node.')
         return urls