diff --git a/src/Symfony/Component/ErrorHandler/Resources/views/exception.html.php b/src/Symfony/Component/ErrorHandler/Resources/views/exception.html.php
index b470b5622b..c3e7a8674e 100644
--- a/src/Symfony/Component/ErrorHandler/Resources/views/exception.html.php
+++ b/src/Symfony/Component/ErrorHandler/Resources/views/exception.html.php
@@ -32,7 +32,7 @@
             $exceptionAsArray = $exception->toArray();
             $exceptionWithUserCode = [];
             $exceptionAsArrayCount = count($exceptionAsArray);
-            $last = count($exceptionAsArray) - 1;
+            $last = $exceptionAsArrayCount - 1;
             foreach ($exceptionAsArray as $i => $e) {
                 foreach ($e['trace'] as $trace) {
                     if ($trace['file'] && false === mb_strpos($trace['file'], '/vendor/') && false === mb_strpos($trace['file'], '/var/cache/') && $i < $last) {