diff --git a/qlib/contrib/model/pytorch_sfm.py b/qlib/contrib/model/pytorch_sfm.py
index e013238fa..4fbe12fb7 100644
--- a/qlib/contrib/model/pytorch_sfm.py
+++ b/qlib/contrib/model/pytorch_sfm.py
@@ -102,7 +102,7 @@ class SFM_Model(nn.Module):
 
             i = self.inner_activation(
                 x_i + torch.matmul(h_tm1 * B_U[0], self.U_i)
-            )  # not sure whether I am doing in the right unsquuze
+            )  
 
             ste = self.inner_activation(x_ste + torch.matmul(h_tm1 * B_U[0], self.U_ste))
             fre = self.inner_activation(x_fre + torch.matmul(h_tm1 * B_U[0], self.U_fre))