diff --git a/apps/accounts/serializers/account/template.py b/apps/accounts/serializers/account/template.py
index f30821313..ea302c3fd 100644
--- a/apps/accounts/serializers/account/template.py
+++ b/apps/accounts/serializers/account/template.py
@@ -15,7 +15,9 @@ class PasswordRulesSerializer(serializers.Serializer):
     uppercase = serializers.BooleanField(default=True, label=_('Uppercase'))
     digit = serializers.BooleanField(default=True, label=_('Digit'))
     symbol = serializers.BooleanField(default=True, label=_('Special symbol'))
-    exclude_symbols = serializers.CharField(default='', max_length=16, label=_('Exclude symbol'))
+    exclude_symbols = serializers.CharField(
+        default='', allow_blank=True, max_length=16, label=_('Exclude symbol')
+    )
 
 
 class AccountTemplateSerializer(BaseAccountSerializer):