diff --git a/lib/rack/tracker/google_adwords_conversion/template/google_adwords_conversion.erb b/lib/rack/tracker/google_adwords_conversion/template/google_adwords_conversion.erb
index e91e75e..18d80f9 100644
--- a/lib/rack/tracker/google_adwords_conversion/template/google_adwords_conversion.erb
+++ b/lib/rack/tracker/google_adwords_conversion/template/google_adwords_conversion.erb
@@ -11,7 +11,7 @@
   <script type="text/javascript" src="//www.googleadservices.com/pagead/conversion.js"></script>
   <noscript>
     <div style="display:inline;">
-      <img height="1" width="1" style="border-style:none;" alt="" src="//www.googleadservices.com/pagead/conversion/<%= ev.id || options[:id] %>/?label=<%= URI.escape(ev.label || options[:label]) %>&amp;guid=ON&amp;script=0"/>
+      <img height="1" width="1" style="border-style:none;" alt="" src="//www.googleadservices.com/pagead/conversion/<%= ev.id || options[:id] %>/?label=<%= URI::DEFAULT_PARSER.escape(ev.label || options[:label]) %>&amp;guid=ON&amp;script=0"/>
     </div>
   </noscript>