diff --git a/llms/mlx_lm/models/helium.py b/llms/mlx_lm/models/helium.py
index 88bb69de..23f45bc0 100644
--- a/llms/mlx_lm/models/helium.py
+++ b/llms/mlx_lm/models/helium.py
@@ -32,6 +32,7 @@ def rotate_half(x: mx.array) -> mx.array:
     x2 = x[..., 1::2]
     return mx.concatenate([-x2, x1], axis=-1)
 
+
 def apply_rotary_pos_emb(q: mx.array, k: mx.array, cos: mx.array, sin: mx.array, position_ids=None, unsqueeze_dim=1) -> Tuple[mx.array, mx.array]:
     """
     Applies Rotary Position Embedding to the query and key tensors.