diff --git a/platform/core-api/api-dump-unreviewed.txt b/platform/core-api/api-dump-unreviewed.txt
index 18984d4ad010..2aff4c45226c 100644
--- a/platform/core-api/api-dump-unreviewed.txt
+++ b/platform/core-api/api-dump-unreviewed.txt
@@ -462,10 +462,6 @@ com.intellij.lang.ASTNode
 - a:replaceAllChildrenToChildrenOf(com.intellij.lang.ASTNode):V
 - a:replaceChild(com.intellij.lang.ASTNode,com.intellij.lang.ASTNode):V
 - a:textContains(C):Z
-f:com.intellij.lang.AstUtilKt
-- sf:children(com.intellij.lang.ASTNode):kotlin.sequences.Sequence
-- sf:parents(com.intellij.lang.ASTNode,Z):kotlin.sequences.Sequence
-- sf:siblings(com.intellij.lang.ASTNode,Z,Z):kotlin.sequences.Sequence
 com.intellij.lang.CodeDocumentationAwareCommenter
 - com.intellij.lang.Commenter
 - a:getBlockCommentTokenType():com.intellij.psi.tree.IElementType
@@ -881,6 +877,10 @@ c:com.intellij.lang.injection.general.SimpleInjection
 - getPrefix():java.lang.String
 - getSuffix():java.lang.String
 - getSupportId():java.lang.String
+f:com.intellij.lang.tree.util.AstUtilKt
+- sf:children(com.intellij.lang.ASTNode):kotlin.sequences.Sequence
+- sf:parents(com.intellij.lang.ASTNode,Z):kotlin.sequences.Sequence
+- sf:siblings(com.intellij.lang.ASTNode,Z,Z):kotlin.sequences.Sequence
 c:com.intellij.lexer.DelegateLexer
 - com.intellij.lexer.LexerBase
 - pf:myDelegate:com.intellij.lexer.Lexer
diff --git a/platform/core-api/src/com/intellij/lang/astUtil.kt b/platform/core-api/src/com/intellij/lang/tree/util/astUtil.kt
similarity index 72%
rename from platform/core-api/src/com/intellij/lang/astUtil.kt
rename to platform/core-api/src/com/intellij/lang/tree/util/astUtil.kt
index c2533239abd5..6696059b44b3 100644
--- a/platform/core-api/src/com/intellij/lang/astUtil.kt
+++ b/platform/core-api/src/com/intellij/lang/tree/util/astUtil.kt
@@ -1,5 +1,7 @@
-// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
-package com.intellij.lang
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.lang.tree.util
+
+import com.intellij.lang.ASTNode
 
 fun ASTNode.children(): Sequence<ASTNode> {
   return generateSequence(firstChildNode) { it.treeNext }