diff --git a/views/site/_tip.erb b/views/site/_tip.erb
index bc56e64f..f52a8628 100644
--- a/views/site/_tip.erb
+++ b/views/site/_tip.erb
@@ -3,7 +3,7 @@
     <input type="hidden" name="cmd" value="_donations">
     <input type="hidden" name="business" value="<%= site.tipping_paypal %>">
     <input type="hidden" name="lc" value="US">
-    <input type="hidden" name="item_name" value="Site Donation for <%= site.title %>">
+    <input type="hidden" name="item_name" value="Site Donation for <%= site.title.gsub(/[^0-9a-z -_!@#$%^&*]/i, '').gsub("'", '&#39;') %> (<%= site.username %>)">
     <input type="hidden" name="no_note" value="0">
     <input type="hidden" name="currency_code" value="USD">
     <input type="hidden" name="bn" value="PP-DonationsBF:btn_donateCC_LG.gif:NonHostedGuest">