diff --git a/src/llamafactory/model/model_utils/packing.py b/src/llamafactory/model/model_utils/packing.py
index ed0d6c41..66409f38 100644
--- a/src/llamafactory/model/model_utils/packing.py
+++ b/src/llamafactory/model/model_utils/packing.py
@@ -53,7 +53,7 @@ logger = logging.get_logger(__name__)
 
 
 def get_seqlens_in_batch(attention_mask: "torch.Tensor") -> "torch.Tensor":
-    r"""Get the sequnce lengths in the current batch.
+    r"""Get the sequence lengths in the current batch.
 
     e.g.
     ```python