diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 847318fb1..2a91006b0 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -34,7 +34,7 @@ module ApplicationHelper
   def sanitise_characters(string)
     return string unless string
 
-    string.gsub("'", "’").gsub("&", "＆")
+    string.tr("'", "’").tr("&", "＆")
   end
 
 private