diff --git a/src/DbHelper.php b/src/DbHelper.php
index 62284ab..35ca04f 100644
--- a/src/DbHelper.php
+++ b/src/DbHelper.php
@@ -13,9 +13,6 @@
 use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Schema\SchemaInterface;
 
-use function in_array;
-use function sprintf;
-
 final class DbHelper
 {
     /**
diff --git a/tests/Common/AbstractDbHelperTest.php b/tests/Common/AbstractDbHelperTest.php
index faa147d..0159ba4 100644
--- a/tests/Common/AbstractDbHelperTest.php
+++ b/tests/Common/AbstractDbHelperTest.php
@@ -9,7 +9,6 @@
 use Yiisoft\Db\Connection\ConnectionInterface;
 use Yiisoft\Db\Exception\Exception;
 use Yiisoft\Db\Exception\InvalidConfigException;
-use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Schema\SchemaInterface;
 use Yiisoft\Translator\Message\Db\DbHelper;