diff --git a/scripts/ch_lib/civitai.py b/scripts/ch_lib/civitai.py
index 2a15ae7..0efd71b 100644
--- a/scripts/ch_lib/civitai.py
+++ b/scripts/ch_lib/civitai.py
@@ -342,7 +342,7 @@ def get_preview_image_by_model_path(model_path:str, max_size_preview, skip_nsfw_
                 if model_info["images"]:
                     for img_dict in model_info["images"]:
                         if "nsfw" in img_dict.keys():
-                            if img_dict["nsfw"]:
+                            if img_dict["nsfw"] and img_dict["nsfw"] != "None":
                                 util.printD("This image is NSFW")
                                 if skip_nsfw_preview:
                                     util.printD("Skip NSFW image")