diff --git a/compiler/fir/analysis-tests/testData/loadCompiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt b/compiler/fir/analysis-tests/testData/loadCompiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt
index 0abf465764c..08dd7c55828 100644
--- a/compiler/fir/analysis-tests/testData/loadCompiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt
+++ b/compiler/fir/analysis-tests/testData/loadCompiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt
@@ -12,7 +12,7 @@ public sealed class Sealed : R|kotlin/Any| {
     public final val z: R|test/Z|
         public get(): R|test/Z|
 
-    @R|test/Ann|() private constructor(@R|test/Ann|() z: R|test/Z|): R|test/Sealed|
+    @R|test/Ann|() internal constructor(@R|test/Ann|() z: R|test/Z|): R|test/Sealed|
 
 }
 
diff --git a/compiler/fir/analysis-tests/testData/loadCompiledKotlin/class/SealedClass.txt b/compiler/fir/analysis-tests/testData/loadCompiledKotlin/class/SealedClass.txt
index 53ae14787a1..7eb9f3de23d 100644
--- a/compiler/fir/analysis-tests/testData/loadCompiledKotlin/class/SealedClass.txt
+++ b/compiler/fir/analysis-tests/testData/loadCompiledKotlin/class/SealedClass.txt
@@ -14,7 +14,7 @@ public sealed class SealedClass : R|kotlin/Any| {
 
     }
 
-    private constructor(): R|test/SealedClass|
+    internal constructor(): R|test/SealedClass|
 
 }
 
diff --git a/compiler/testData/compileJavaAgainstKotlin/sealed/Derived.java b/compiler/testData/compileJavaAgainstKotlin/sealed/Derived.java
index bb17a9adc6b..f6c85d5b07f 100644
--- a/compiler/testData/compileJavaAgainstKotlin/sealed/Derived.java
+++ b/compiler/testData/compileJavaAgainstKotlin/sealed/Derived.java
@@ -3,4 +3,4 @@ package test;
 // It's not possible to inherit from Season (it's sealed in Kotlin)
 public class Derived extends Season {
 
-}
\ No newline at end of file
+}
diff --git a/compiler/testData/ir/irText/classes/sealedClasses.kt.txt b/compiler/testData/ir/irText/classes/sealedClasses.kt.txt
index 6478ced9ad6..bd162164659 100644
--- a/compiler/testData/ir/irText/classes/sealedClasses.kt.txt
+++ b/compiler/testData/ir/irText/classes/sealedClasses.kt.txt
@@ -1,5 +1,5 @@
 sealed class Expr {
-  private constructor() /* primary */ {
+  internal constructor() /* primary */ {
     super/*Any*/()
     /* <init>() */
 
diff --git a/compiler/testData/ir/irText/classes/sealedClasses.txt b/compiler/testData/ir/irText/classes/sealedClasses.txt
index 5c1b2a0254b..f8234fa55d8 100644
--- a/compiler/testData/ir/irText/classes/sealedClasses.txt
+++ b/compiler/testData/ir/irText/classes/sealedClasses.txt
@@ -1,7 +1,7 @@
 FILE fqName:<root> fileName:/sealedClasses.kt
   CLASS CLASS name:Expr modality:SEALED visibility:public superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Expr
-    CONSTRUCTOR visibility:private <> () returnType:<root>.Expr [primary]
+    CONSTRUCTOR visibility:internal <> () returnType:<root>.Expr [primary]
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
         INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Expr modality:SEALED visibility:public superTypes:[kotlin.Any]'
@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/sealedClasses.kt
       CONSTRUCTOR visibility:public <> (number:kotlin.Double) returnType:<root>.Expr.Const [primary]
         VALUE_PARAMETER name:number index:0 type:kotlin.Double
         BLOCK_BODY
-          DELEGATING_CONSTRUCTOR_CALL 'private constructor <init> () [primary] declared in <root>.Expr'
+          DELEGATING_CONSTRUCTOR_CALL 'internal constructor <init> () [primary] declared in <root>.Expr'
           INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Const modality:FINAL visibility:public superTypes:[<root>.Expr]'
       PROPERTY name:number visibility:public modality:FINAL [val]
         FIELD PROPERTY_BACKING_FIELD name:number type:kotlin.Double visibility:private [final]
@@ -42,7 +42,7 @@ FILE fqName:<root> fileName:/sealedClasses.kt
         VALUE_PARAMETER name:e1 index:0 type:<root>.Expr
         VALUE_PARAMETER name:e2 index:1 type:<root>.Expr
         BLOCK_BODY
-          DELEGATING_CONSTRUCTOR_CALL 'private constructor <init> () [primary] declared in <root>.Expr'
+          DELEGATING_CONSTRUCTOR_CALL 'internal constructor <init> () [primary] declared in <root>.Expr'
           INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Sum modality:FINAL visibility:public superTypes:[<root>.Expr]'
       PROPERTY name:e1 visibility:public modality:FINAL [val]
         FIELD PROPERTY_BACKING_FIELD name:e1 type:<root>.Expr visibility:private [final]
@@ -83,7 +83,7 @@ FILE fqName:<root> fileName:/sealedClasses.kt
       $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Expr.NotANumber
       CONSTRUCTOR visibility:private <> () returnType:<root>.Expr.NotANumber [primary]
         BLOCK_BODY
-          DELEGATING_CONSTRUCTOR_CALL 'private constructor <init> () [primary] declared in <root>.Expr'
+          DELEGATING_CONSTRUCTOR_CALL 'internal constructor <init> () [primary] declared in <root>.Expr'
           INSTANCE_INITIALIZER_CALL classDescriptor='CLASS OBJECT name:NotANumber modality:FINAL visibility:public superTypes:[<root>.Expr]'
       FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
         overridden:
diff --git a/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.kt.txt b/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.kt.txt
index 6f95f6af0b4..8e4b78d0641 100644
--- a/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.kt.txt
+++ b/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.kt.txt
@@ -1,5 +1,5 @@
 expect sealed class Ops {
-  private expect constructor() /* primary */ 
+  internal expect constructor() /* primary */
 
 }
 
@@ -9,7 +9,7 @@ expect class Add : Ops {
 }
 
 sealed class Ops {
-  private constructor() /* primary */ {
+  internal constructor() /* primary */ {
     super/*Any*/()
     /* <init>() */
 
diff --git a/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.txt b/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.txt
index 77cb758d6ba..5d65736964f 100644
--- a/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.txt
+++ b/compiler/testData/ir/irText/declarations/multiplatform/expectedSealedClass.txt
@@ -1,7 +1,7 @@
 FILE fqName:<root> fileName:/expectedSealedClass.kt
   CLASS CLASS name:Ops modality:SEALED visibility:public [expect] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Ops
-    CONSTRUCTOR visibility:private <> () returnType:<root>.Ops [primary,expect]
+    CONSTRUCTOR visibility:internal <> () returnType:<root>.Ops [primary,expect]
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
       overridden:
         public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
@@ -33,7 +33,7 @@ FILE fqName:<root> fileName:/expectedSealedClass.kt
       $this: VALUE_PARAMETER name:<this> type:kotlin.Any
   CLASS CLASS name:Ops modality:SEALED visibility:public superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Ops
-    CONSTRUCTOR visibility:private <> () returnType:<root>.Ops [primary]
+    CONSTRUCTOR visibility:internal <> () returnType:<root>.Ops [primary]
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
         INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Ops modality:SEALED visibility:public superTypes:[kotlin.Any]'
@@ -54,7 +54,7 @@ FILE fqName:<root> fileName:/expectedSealedClass.kt
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Add
     CONSTRUCTOR visibility:public <> () returnType:<root>.Add [primary]
       BLOCK_BODY
-        DELEGATING_CONSTRUCTOR_CALL 'private constructor <init> () [primary] declared in <root>.Ops'
+        DELEGATING_CONSTRUCTOR_CALL 'internal constructor <init> () [primary] declared in <root>.Ops'
         INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Add modality:FINAL visibility:public superTypes:[<root>.Ops]'
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
       overridden:
diff --git a/compiler/testData/loadJava/compiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt b/compiler/testData/loadJava/compiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt
index cbef850e2ac..50112e06d47 100644
--- a/compiler/testData/loadJava/compiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt
+++ b/compiler/testData/loadJava/compiledKotlin/annotations/classMembers/HiddenConstructorWithInlineClassParameters.txt
@@ -5,7 +5,7 @@ public final annotation class Ann : kotlin.Annotation {
 }
 
 public sealed class Sealed {
-    /*primary*/ @test.Ann private constructor Sealed(/*0*/ @test.Ann z: test.Z)
+    /*primary*/ @test.Ann internal constructor Sealed(/*0*/ @test.Ann z: test.Z)
     public final val z: test.Z
         public final fun <get-z>(): test.Z
 
diff --git a/compiler/testData/loadJava/compiledKotlin/class/SealedClass.txt b/compiler/testData/loadJava/compiledKotlin/class/SealedClass.txt
index 0b47abf1626..af4e2a97b3e 100644
--- a/compiler/testData/loadJava/compiledKotlin/class/SealedClass.txt
+++ b/compiler/testData/loadJava/compiledKotlin/class/SealedClass.txt
@@ -9,7 +9,7 @@ public final class Inheritor3 : test.SealedClass {
 }
 
 public sealed class SealedClass {
-    /*primary*/ private constructor SealedClass()
+    /*primary*/ internal constructor SealedClass()
 
     public final class Inheritor1 : test.SealedClass {
         /*primary*/ public constructor Inheritor1()
diff --git a/idea/testData/decompiler/stubBuilder/Sealed/Sealed.txt b/idea/testData/decompiler/stubBuilder/Sealed/Sealed.txt
index 7fe2194334f..97af5678c57 100644
--- a/idea/testData/decompiler/stubBuilder/Sealed/Sealed.txt
+++ b/idea/testData/decompiler/stubBuilder/Sealed/Sealed.txt
@@ -5,7 +5,7 @@ PsiJetFileStubImpl[package=test]
   CLASS[fqName=test.Sealed, isEnumEntry=false, isInterface=false, isLocal=false, isTopLevel=true, name=Sealed, superNames=[]]
     MODIFIER_LIST[public sealed]
     PRIMARY_CONSTRUCTOR
-      MODIFIER_LIST[private]
+      MODIFIER_LIST[internal]
       VALUE_PARAMETER_LIST
     CLASS_BODY
       CLASS[fqName=test.Sealed.Nested, isEnumEntry=false, isInterface=false, isLocal=false, isTopLevel=false, name=Nested, superNames=[Sealed]]
diff --git a/libraries/tools/kotlinp/testData/NestedClasses.txt b/libraries/tools/kotlinp/testData/NestedClasses.txt
index 0b631ab866e..0e604d1bc9e 100644
--- a/libraries/tools/kotlinp/testData/NestedClasses.txt
+++ b/libraries/tools/kotlinp/testData/NestedClasses.txt
@@ -55,7 +55,7 @@ public final enum class A.D.E : kotlin/Enum<A.D.E> {
 public sealed class A.D.F : kotlin/Any {
 
   // signature: <init>()V
-  private constructor()
+  internal constructor()
 
   // nested class: G