diff --git a/ppocr/utils/character.py b/ppocr/utils/character.py
index 2db0151e62ced347cfbda2d8be9d49e1e6b40690..c7c93fc557604a32d12343d929c119fd787ee126 100755
--- a/ppocr/utils/character.py
+++ b/ppocr/utils/character.py
@@ -26,7 +26,7 @@ class CharacterOps(object):
         self.character_type = config['character_type']
         self.loss_type = config['loss_type']
         self.max_text_len = config['max_text_length']
-        if self.loss_type == "srn" and self.character_type == "ch":
+        if self.loss_type == "srn" and self.character_type != "en":
             raise Exception("SRN can only support in character_type == en")
         if self.character_type == "en":
             self.character_str = "0123456789abcdefghijklmnopqrstuvwxyz"