diff --git a/app/service/generate_image/service_generate_image.py b/app/service/generate_image/service_generate_image.py
index b49433e..daad5c6 100644
--- a/app/service/generate_image/service_generate_image.py
+++ b/app/service/generate_image/service_generate_image.py
@@ -91,7 +91,7 @@ class GenerateImage:
             image = result.as_numpy("generated_image")
             image_result = cv2.cvtColor(np.squeeze(image.astype(np.uint8)), cv2.COLOR_RGB2BGR)
             is_smudge = True
-            if self.category == "sketch":
+            if self.category == "sketch" and self.version == "fast":
                 # 色阶调整
                 cutoff = 1
                 levels_img = autoLevels(image_result, cutoff)