diff --git a/templates/index.mako b/templates/index.mako
index 65b8da4..7154dd3 100644
--- a/templates/index.mako
+++ b/templates/index.mako
@@ -153,7 +153,7 @@
         % else:
             seconds.
         % endif
-        <a href="${request.script_root | h}?lang=${query.lang | h}&amp;project=${query.project | h}&amp;oldid=${query.page.lastrevid}&amp;action=${query.action}&amp;${("use_engine=" + int(query.use_engine not in ("0", "false")) + "&use_links=" + int(query.use_links not in ("0", "false"))) if query.action == "search" else ("url=" + query.url) | h}">Permalink.</a>
+        <a href="${request.script_root | h}?lang=${query.lang | h}&amp;project=${query.project | h}&amp;oldid=${query.page.lastrevid}&amp;action=${query.action}&amp;${("use_engine={0}&use_links={1}".format(int(query.use_engine not in ("0", "false")), int(query.use_links not in ("0", "false"))) if query.action == "search" else ("url=" + query.url) | h}">Permalink.</a>
     </div>
     <div id="cv-result" class="${'red' if result.confidence >= T_SUSPECT else 'yellow' if result.confidence >= T_POSSIBLE else 'green'}-box">
         <table id="cv-result-head-table">