diff --git a/app/main/validators.py b/app/main/validators.py
index b7dfb25a7..406bd12d4 100644
--- a/app/main/validators.py
+++ b/app/main/validators.py
@@ -84,7 +84,7 @@ class OnlySMSCharacters:
         non_sms_characters = sorted(list(SanitiseSMS.get_non_compatible_characters(field.data)))
         if non_sms_characters:
             raise ValidationError(
-                'You can’t use {} in text messages. {} won’t show up properly on everyone’s phones.'.format(
+                'You can’t use {} in text messages. {} will not show up properly on everyone’s phones.'.format(
                     formatted_list(non_sms_characters, conjunction='or', before_each='', after_each=''),
                     ('It' if len(non_sms_characters) == 1 else 'They')
                 )