diff --git a/paddlespeech/t2s/frontend/zh_normalization/text_normlization.py b/paddlespeech/t2s/frontend/zh_normalization/text_normlization.py
index 8ef798338..1942e6661 100644
--- a/paddlespeech/t2s/frontend/zh_normalization/text_normlization.py
+++ b/paddlespeech/t2s/frontend/zh_normalization/text_normlization.py
@@ -75,16 +75,16 @@ class TextNormalizer():
         sentence = sentence.replace('/', '每')
         sentence = sentence.replace('~', '至')
         sentence = sentence.replace('～', '至')
-        sentence = sentence.replace('①','一')
-        sentence = sentence.replace('②','二')
-        sentence = sentence.replace('③','三')
-        sentence = sentence.replace('④','四')
-        sentence = sentence.replace('⑤','五')
-        sentence = sentence.replace('⑥','六')
-        sentence = sentence.replace('⑦','七')
-        sentence = sentence.replace('⑧','八')
-        sentence = sentence.replace('⑨','九')
-        sentence = sentence.replace('⑩','十')
+        sentence = sentence.replace('①', '一')
+        sentence = sentence.replace('②', '二')
+        sentence = sentence.replace('③', '三')
+        sentence = sentence.replace('④', '四')
+        sentence = sentence.replace('⑤', '五')
+        sentence = sentence.replace('⑥', '六')
+        sentence = sentence.replace('⑦', '七')
+        sentence = sentence.replace('⑧', '八')
+        sentence = sentence.replace('⑨', '九')
+        sentence = sentence.replace('⑩', '十')
 
         return sentence