diff --git a/python/examples/lac/lac_web_service.py b/python/examples/lac/lac_web_service.py
index 9b1c6693b52393aee1294b521fe30fb1a9fd0d79..bed89f54b626c0cce55767f8edacc3dd33f0104c 100644
--- a/python/examples/lac/lac_web_service.py
+++ b/python/examples/lac/lac_web_service.py
@@ -19,7 +19,7 @@ from paddle_serving_app.reader import LACReader
 
 class LACService(WebService):
     def load_reader(self):
-        self.reader = LACReader("lac_dict")
+        self.reader = LACReader()
 
     def preprocess(self, feed={}, fetch=[]):
         feed_batch = []