diff --git a/ppocr/data/imaug/label_ops.py b/ppocr/data/imaug/label_ops.py
index ec5bc969051918ddc7a0cb8444b5ad9190339eff..0a4fad621a9038e71a9d43eb4e12f78e7e92d73d 100644
--- a/ppocr/data/imaug/label_ops.py
+++ b/ppocr/data/imaug/label_ops.py
@@ -99,6 +99,7 @@ class BaseRecLabelEncode(object):
         self.max_text_len = max_text_length
         self.beg_str = "sos"
         self.end_str = "eos"
+        self.lower = False
 
         if character_dict_path is None:
             logger = get_logger()
diff --git a/ppocr/postprocess/rec_postprocess.py b/ppocr/postprocess/rec_postprocess.py
index c149d9549ed8e8f8000215e7888b7f4aae47f110..ef1a43fd0ee65f3e55a8f72dfd2f96c478da1a9a 100644
--- a/ppocr/postprocess/rec_postprocess.py
+++ b/ppocr/postprocess/rec_postprocess.py
@@ -29,7 +29,6 @@ class BaseRecLabelDecode(object):
         if character_dict_path is None:
             self.character_str = "0123456789abcdefghijklmnopqrstuvwxyz"
             dict_character = list(self.character_str)
-            self.lower = True
         else:
             with open(character_dict_path, "rb") as fin:
                 lines = fin.readlines()