diff --git a/__init__.py b/__init__.py
index 3835e1c..9be7ad0 100755
--- a/__init__.py
+++ b/__init__.py
@@ -17,7 +17,9 @@ if system() == "Darwin":
     os.environ["PYTORCH_ENABLE_MPS_FALLBACK"] = "1"
     os.environ["HF_HOME"] = "~/.cache/huggingface"
 os.environ["XFORMERS_FORCE_DISABLE_TRITON"] = "1"
-os.environ["USER_DEF_CLIP"] = Path(__file__).parent.joinpath("models/open_clip_pytorch_model.bin").as_posix()
+USER_DEF_CLIP = Path(__file__).parent.joinpath("models/open_clip_pytorch_model.bin")
+if USER_DEF_CLIP.exists():
+    os.environ["USER_DEF_CLIP"] = USER_DEF_CLIP.as_posix()
 # os.environ["no_proxy"] = "localhost, 127.0.0.1, ::1"
 
 ROOT = Path(__file__).parent.joinpath("ToonCrafter")