diff --git a/app/service/design/model_process_service.py b/app/service/design/model_process_service.py
index fffbd67..076e04d 100644
--- a/app/service/design/model_process_service.py
+++ b/app/service/design/model_process_service.py
@@ -13,7 +13,7 @@ def model_transpose(image_path):
     #
     new_data = []
     for item in data:
-        if item[0] >= 230 and item[1] >= 230 and item[2] >= 230:
+        if item[0] >= 256 and item[1] >= 256 and item[2] >= 256:
             new_data.append((255, 255, 255, 0))
         else:
             new_data.append(item)