--- a/templates/report/backtrace.html.ep	Mon Dec 28 21:36:14 2015 +0100
+++ b/templates/report/backtrace.html.ep	Mon Dec 28 21:42:10 2015 +0100
@@ -1,4 +1,4 @@
-<a data-toggle="collapse" href="#backtrace-crashing-thread"><h3>Crashing thread top frames</h3></a>
+<a data-toggle="collapse" href="#backtrace-crashing-thread"><h3>Crashing thread (#<%= $crashing_thread->{threads_index} %>) top frames</h3></a>
 <div id="backtrace-crashing-thread" class="collapse in">
   %= include 'report/backtrace/frames', thread => $crashing_thread
 </div>