diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index f0bd91b31f..4653fd97c9 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -16,6 +16,7 @@ Yii Framework 2 Change Log
 - Enh #14081: Added `yii\caching\CacheInterface` to make custom cache extensions adoption easier (silverfire)
 - Chg #14286: Used primary inputmask package name instead of an alias (samdark)
 - Enh #14298: The default response formatter configs defined by `yii\web\Response::defaultFormatters()` now use the array syntax (brandonkelly)
+- Bug #14341: Fixed regression in error handling introduced by fixing #14264 (samdark)
 
 2.0.12 June 05, 2017
 --------------------
diff --git a/framework/log/Logger.php b/framework/log/Logger.php
index 7124b2f03b..9bbfa4e89a 100644
--- a/framework/log/Logger.php
+++ b/framework/log/Logger.php
@@ -278,7 +278,7 @@ class Logger extends Component
             list($token, $level, $category, $timestamp, $traces) = $log;
             $memory = isset($log[5]) ? $log[5] : 0;
             $log[6] = $i;
-            $hash = md5(serialize($token));
+            $hash = md5(json_encode($token));
             if ($level == self::LEVEL_PROFILE_BEGIN) {
                 $stack[$hash] = $log;
             } elseif ($level == self::LEVEL_PROFILE_END) {