diff --git a/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php b/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
index 4bbba510768..9563dcffeb2 100644
--- a/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
+++ b/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
@@ -113,7 +113,6 @@ private function resolveTypeWithNullablePHPParserUnionType(
     ): PhpParserUnionType|NullableType|null {
         $totalTypes = count($phpParserUnionType->types);
         if ($totalTypes === 2) {
-            $phpParserUnionType->types = array_values($phpParserUnionType->types);
             $firstType = $phpParserUnionType->types[0];
             $secondType = $phpParserUnionType->types[1];
 
@@ -244,8 +243,6 @@ private function matchPhpParserUnionType(UnionType $unionType, string $typeKind)
      */
     private function removeRedundantIntersectionTypes(array $phpParserUnionedTypes): array
     {
-        $phpParserUnionedTypes = array_values($phpParserUnionedTypes);
-
         $typeNames = [];
         foreach ($phpParserUnionedTypes as $key => $phpParserUnionedType) {
             $typeNames[$key] = $this->resolveIntersectionPartNames($phpParserUnionedType);
diff --git a/src/PhpParser/Node/FileNode.php b/src/PhpParser/Node/FileNode.php
index 4611c641578..45d4e433234 100644
--- a/src/PhpParser/Node/FileNode.php
+++ b/src/PhpParser/Node/FileNode.php
@@ -126,7 +126,6 @@ public function addImports(
 
         // make use stmts first
         $placementNode->stmts = array_merge($newUses, $this->resolveInsertNop($placementNode), $placementNode->stmts);
-        $placementNode->stmts = array_values($placementNode->stmts);
 
         $this->appendUsedImports($useImportTypes, $functionUseImportTypes, $constantUseImportTypes);
 
diff --git a/src/PostRector/Rector/ClassRenamingPostRector.php b/src/PostRector/Rector/ClassRenamingPostRector.php
index 2c13b0d85f3..11f2aec189c 100644
--- a/src/PostRector/Rector/ClassRenamingPostRector.php
+++ b/src/PostRector/Rector/ClassRenamingPostRector.php
@@ -30,10 +30,10 @@ public function enterNode(Node $node): FileNode|int
         // the FileNode resolves the namespace-or-file placement internally
         if ($node instanceof FileNode) {
             // keep only the uses that were actually renamed
-            $removedUses = array_values(array_filter(
+            $removedUses = array_filter(
                 $this->renamedClassesDataCollector->getOldClasses(),
                 $this->renamedNameCollector->has(...)
-            ));
+            );
 
             if ($node->removeImports($removedUses)) {
                 $this->addRectorClassWithLine($node);