diff --git a/lib/tests/behat/behat_hooks.php b/lib/tests/behat/behat_hooks.php
index f487c8f7da5c5..bbbe7ccc67ff5 100644
--- a/lib/tests/behat/behat_hooks.php
+++ b/lib/tests/behat/behat_hooks.php
@@ -250,7 +250,7 @@ public function i_look_for_exceptions() {
             // PHP debug messages.
             $phperrorxpath = "//div[@data-rel='phpdebugmessage']";
             // Any other backtrace.
-            $othersxpath = "//ul[@data-rel='backtrace']";
+            $othersxpath = "//*[contains(., ': call to ')])[1]";
 
             $xpaths = array($exceptionsxpath, $debuggingxpath, $phperrorxpath, $othersxpath);
             $joinedxpath = implode(' | ', $xpaths);