diff --git a/src/Schema/AbstractTableSchema.php b/src/Schema/AbstractTableSchema.php
index 1e25f5df6..bc72ad989 100644
--- a/src/Schema/AbstractTableSchema.php
+++ b/src/Schema/AbstractTableSchema.php
@@ -4,8 +4,6 @@
 
 namespace Yiisoft\Db\Schema;
 
-use Yiisoft\Db\Exception\NotSupportedException;
-
 use function array_keys;
 
 /**
diff --git a/src/Schema/TableSchemaInterface.php b/src/Schema/TableSchemaInterface.php
index 4452328b3..db1ddd1de 100644
--- a/src/Schema/TableSchemaInterface.php
+++ b/src/Schema/TableSchemaInterface.php
@@ -4,8 +4,6 @@
 
 namespace Yiisoft\Db\Schema;
 
-use Yiisoft\Db\Exception\NotSupportedException;
-
 /**
  * Represents the metadata of a database table.
  *
diff --git a/tests/AbstractTableSchemaTest.php b/tests/AbstractTableSchemaTest.php
index e10a6cecf..5a4fd3ba2 100644
--- a/tests/AbstractTableSchemaTest.php
+++ b/tests/AbstractTableSchemaTest.php
@@ -5,7 +5,6 @@
 namespace Yiisoft\Db\Tests;
 
 use PHPUnit\Framework\TestCase;
-use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Tests\Support\Stub\ColumnSchema;
 use Yiisoft\Db\Tests\Support\Stub\TableSchema;
 use Yiisoft\Db\Tests\Support\TestTrait;