diff --git a/src/Platforms/DB2Platform.php b/src/Platforms/DB2Platform.php
index 3166e744f7..f0289802d5 100644
--- a/src/Platforms/DB2Platform.php
+++ b/src/Platforms/DB2Platform.php
@@ -468,40 +468,6 @@ private function getAlterColumnClausesSQL(ColumnDiff $columnDiff, bool &$needsRe
         return $clauses;
     }
 
-    /**
-     * {@inheritDoc}
-     */
-    protected function getPreAlterTableIndexForeignKeySQL(TableDiff $diff): array
-    {
-        $sql = [];
-
-        $tableNameSQL = $diff->getOldTable()->getObjectName()->toSQL($this);
-
-        foreach ($diff->getDroppedIndexes() as $droppedIndex) {
-            foreach ($diff->getAddedIndexes() as $addedIndex) {
-                if ($droppedIndex->getColumns() !== $addedIndex->getColumns()) {
-                    continue;
-                }
-
-                if ($droppedIndex->isUnique()) {
-                    $sql[] = 'ALTER TABLE ' . $tableNameSQL . ' DROP UNIQUE '
-                        . $droppedIndex->getObjectName()->toSQL($this);
-                } else {
-                    $sql[] = $this->getDropIndexSQL($droppedIndex->getObjectName()->toSQL($this), $tableNameSQL);
-                }
-
-                $sql[] = $this->getCreateIndexSQL($addedIndex, $tableNameSQL);
-
-                $diff->unsetAddedIndex($addedIndex);
-                $diff->unsetDroppedIndex($droppedIndex);
-
-                break;
-            }
-        }
-
-        return array_merge($sql, parent::getPreAlterTableIndexForeignKeySQL($diff));
-    }
-
     /**
      * {@inheritDoc}
      */
diff --git a/tests/Functional/Schema/SchemaManagerFunctionalTestCase.php b/tests/Functional/Schema/SchemaManagerFunctionalTestCase.php
index b23e3b9a40..2a902e146b 100644
--- a/tests/Functional/Schema/SchemaManagerFunctionalTestCase.php
+++ b/tests/Functional/Schema/SchemaManagerFunctionalTestCase.php
@@ -12,6 +12,7 @@
 use Doctrine\DBAL\Platforms\SQLitePlatform;
 use Doctrine\DBAL\Schema\AbstractAsset;
 use Doctrine\DBAL\Schema\AbstractSchemaManager;
+use Doctrine\DBAL\Schema\ComparatorConfig;
 use Doctrine\DBAL\Schema\ForeignKeyConstraint;
 use Doctrine\DBAL\Schema\Name\OptionallyQualifiedName;
 use Doctrine\DBAL\Schema\Name\UnqualifiedName;
@@ -1431,7 +1432,9 @@ public function testChangeIndexWithForeignKeys(): void
         $child->dropIndex('idx_1');
         $child->addIndex(['parent_id'], 'idx_2');
 
-        $diff = $schemaManager->createComparator()->compareTables(
+        $diff = $schemaManager->createComparator(
+            (new ComparatorConfig())->withDetectRenamedIndexes(false),
+        )->compareTables(
             $schemaManager->introspectTable('child'),
             $child,
         );