diff --git a/apps/common/utils/random.py b/apps/common/utils/random.py
index a9ef0421f..1a7449ef0 100644
--- a/apps/common/utils/random.py
+++ b/apps/common/utils/random.py
@@ -6,7 +6,7 @@ import socket
 import string
 
 
-string_punctuation = '!#$%&()*+,-.:;<=>?@[]^_{}~'
+string_punctuation = '!#$%&()*+,-.:;<=>?@[]^_~'
 
 
 def random_datetime(date_start, date_end):