diff --git a/framework/log/Target.php b/framework/log/Target.php
index 076edb9084..1d0ae583dd 100644
--- a/framework/log/Target.php
+++ b/framework/log/Target.php
@@ -9,7 +9,6 @@ namespace yii\log;
 
 use Yii;
 use yii\base\Component;
-use yii\base\ErrorHandler;
 use yii\base\InvalidConfigException;
 use yii\helpers\VarDumper;
 use yii\web\Request;
diff --git a/framework/validators/DateValidator.php b/framework/validators/DateValidator.php
index 85874f7aaf..930c8313c1 100644
--- a/framework/validators/DateValidator.php
+++ b/framework/validators/DateValidator.php
@@ -10,7 +10,6 @@ namespace yii\validators;
 use DateTime;
 use IntlDateFormatter;
 use Yii;
-use yii\base\Exception;
 use yii\base\InvalidConfigException;
 use yii\helpers\FormatConverter;