diff --git a/src/axolotl/monkeypatch/utils.py b/src/axolotl/monkeypatch/utils.py
index c360cf94e..be834e98d 100644
--- a/src/axolotl/monkeypatch/utils.py
+++ b/src/axolotl/monkeypatch/utils.py
@@ -228,8 +228,8 @@ def mask_2d_to_4d(
     bsz, src_len = int(mask.size()[0]), int(mask.size()[1])
     tgt_len = tgt_len if tgt_len is not None else src_len
 
-    # mask = mask.unsqueeze(1).unsqueeze(2)
-    mask = mask[None, None, :, :].expand(bsz, 1, tgt_len, src_len)
+    mask = mask.unsqueeze(1).unsqueeze(2)
+    mask = mask.expand(bsz, 1, tgt_len, src_len)
 
     # Create a binary mask from the original mask where zeros remain zeros and all other values are set to one
     binary_mask = torch.where(