diff --git a/mmagic/models/editors/fastcomposer/fastcomposer_util.py b/mmagic/models/editors/fastcomposer/fastcomposer_util.py
index 501a24770..55d9b62a0 100644
--- a/mmagic/models/editors/fastcomposer/fastcomposer_util.py
+++ b/mmagic/models/editors/fastcomposer/fastcomposer_util.py
@@ -13,10 +13,12 @@
                           CLIPVisionConfig, CLIPVisionModel)
 from transformers.modeling_outputs import BaseModelOutputWithPooling
 
-from mmagic.utils import try_import 
+from mmagic.utils import try_import
+
 _expand_mask = try_import('transformers.models.clip.modeling_clip')
-if _expand_mask is None: 
-    _expand_mask = try_import('ransformers.models.clip.modeling_clip._prepare_4d_attention_mask')
+if _expand_mask is None:
+    _expand_mask = try_import(
+        'ransformers.models.clip.modeling_clip._prepare_4d_attention_mask')
 
 
 class FastComposerModel(nn.Module):