diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/JvmStaticInPrivateCompanionChecker.kt b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/JvmStaticInPrivateCompanionChecker.kt
deleted file mode 100644
index e08d7f0ecae..00000000000
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/JvmStaticInPrivateCompanionChecker.kt
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.resolve.jvm.checkers
-
-import org.jetbrains.kotlin.descriptors.ClassDescriptor
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
-import org.jetbrains.kotlin.descriptors.Visibilities
-import org.jetbrains.kotlin.diagnostics.Errors.JVM_STATIC_IN_PRIVATE_COMPANION
-import org.jetbrains.kotlin.psi.KtDeclaration
-import org.jetbrains.kotlin.resolve.annotations.JVM_STATIC_ANNOTATION_FQ_NAME
-import org.jetbrains.kotlin.resolve.checkers.DeclarationChecker
-import org.jetbrains.kotlin.resolve.checkers.DeclarationCheckerContext
-import org.jetbrains.kotlin.resolve.source.KotlinSourceElement
-import org.jetbrains.kotlin.utils.addToStdlib.safeAs
-
-class JvmStaticInPrivateCompanionChecker : DeclarationChecker {
-    override fun check(declaration: KtDeclaration, descriptor: DeclarationDescriptor, context: DeclarationCheckerContext) {
-
-        descriptor.containingDeclaration.safeAs<ClassDescriptor>()?.takeIf {
-            it.isCompanionObject && Visibilities.isPrivate(it.visibility.delegate)
-        } ?: return
-
-        val jvmStaticAnnotation = descriptor.annotations.findAnnotation(JVM_STATIC_ANNOTATION_FQ_NAME) ?: return
-
-        val reportTarget = jvmStaticAnnotation.source.safeAs<KotlinSourceElement>()?.psi ?: declaration
-        context.trace.report(JVM_STATIC_IN_PRIVATE_COMPANION.on(reportTarget))
-    }
-}
\ No newline at end of file
diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt
index 9c0addcdca7..cc8db2176c6 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt
@@ -97,7 +97,6 @@ object JvmPlatformConfigurator : PlatformConfiguratorBase(
 ) {
     override fun configureModuleComponents(container: StorageComponentContainer) {
         container.useImpl<JvmStaticChecker>()
-        container.useImpl<JvmStaticInPrivateCompanionChecker>()
         container.useImpl<JvmReflectionAPICallChecker>()
         container.useImpl<JavaSyntheticScopes>()
         container.useImpl<SamConversionResolverImpl>()
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/Errors.java b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/Errors.java
index 3fcbcc93663..f0f38f9ac6f 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/Errors.java
+++ b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/Errors.java
@@ -285,7 +285,6 @@ public interface Errors {
     DiagnosticFactory1<PsiElement, String> EXPERIMENTAL_UNSIGNED_LITERALS_ERROR = DiagnosticFactory1.create(ERROR);
 
     DiagnosticFactory0<PsiElement> NON_PARENTHESIZED_ANNOTATIONS_ON_FUNCTIONAL_TYPES = DiagnosticFactory0.create(ERROR);
-    DiagnosticFactory0<PsiElement> JVM_STATIC_IN_PRIVATE_COMPANION = DiagnosticFactory0.create(WARNING);
 
     // Const
     DiagnosticFactory0<PsiElement> CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT = DiagnosticFactory0.create(ERROR);
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
index 254ffeef805..75f9a22e5b8 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
+++ b/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java
@@ -170,7 +170,6 @@ public class DefaultErrorMessages {
         MAP.put(EXPERIMENTAL_UNSIGNED_LITERALS_ERROR, "{0}", STRING);
 
         MAP.put(NON_PARENTHESIZED_ANNOTATIONS_ON_FUNCTIONAL_TYPES, "Non-parenthesized annotations on function types without receiver aren't yet supported (see KT-31734 for details)");
-        MAP.put(JVM_STATIC_IN_PRIVATE_COMPANION, "@JvmStatic is prohibited in private companion objects. This warning will become an error in the next major version");
 
         MAP.put(REDUNDANT_MODIFIER, "Modifier ''{0}'' is redundant because ''{1}'' is present", TO_STRING, TO_STRING);
         MAP.put(REDUNDANT_OPEN_IN_INTERFACE, "Modifier 'open' is redundant for abstract interface members");
diff --git a/compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/privateCompanionObject.fir.kt b/compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/privateCompanionObject.fir.kt
deleted file mode 100644
index 4b6f9d5ae3b..00000000000
--- a/compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/privateCompanionObject.fir.kt
+++ /dev/null
@@ -1,29 +0,0 @@
-// Issue: KT-25114
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-
-class WithPrivateCompanion {
-    private companion object {
-        @JvmStatic
-        val staticVal1: Int = 42
-
-        val staticVal2: Int
-            @JvmStatic get() = 42
-
-        @get:JvmStatic
-        val staticVal3: Int = 42
-
-        @JvmStatic
-        var staticVar1: Int = 42
-
-        var staticVar2: Int
-            @JvmStatic get() = 42
-            @JvmStatic set(value) {}
-
-        @get: JvmStatic
-        @set: JvmStatic
-        var staticVar3: Int = 42
-
-        @JvmStatic
-        fun staticFunction() {}
-    }
-}
\ No newline at end of file
diff --git a/compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/privateCompanionObject.kt b/compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/privateCompanionObject.kt
index 1c718ce215b..7a809f942eb 100644
--- a/compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/privateCompanionObject.kt
+++ b/compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/privateCompanionObject.kt
@@ -1,29 +1,30 @@
 // Issue: KT-25114
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 class WithPrivateCompanion {
     private companion object {
-        <!JVM_STATIC_IN_PRIVATE_COMPANION!>@JvmStatic<!>
+        @JvmStatic
         val staticVal1: Int = 42
 
         val staticVal2: Int
-            <!JVM_STATIC_IN_PRIVATE_COMPANION!>@JvmStatic<!> get() = 42
+            @JvmStatic get() = 42
 
-        <!JVM_STATIC_IN_PRIVATE_COMPANION!>@get:JvmStatic<!>
+        @get:JvmStatic
         val staticVal3: Int = 42
 
-        <!JVM_STATIC_IN_PRIVATE_COMPANION!>@JvmStatic<!>
+        @JvmStatic
         var staticVar1: Int = 42
 
         var staticVar2: Int
-            <!JVM_STATIC_IN_PRIVATE_COMPANION!>@JvmStatic<!> get() = 42
-            <!JVM_STATIC_IN_PRIVATE_COMPANION!>@JvmStatic<!> set(value) {}
+            @JvmStatic get() = 42
+            @JvmStatic set(value) {}
 
-        <!JVM_STATIC_IN_PRIVATE_COMPANION!>@get: JvmStatic<!>
-        <!JVM_STATIC_IN_PRIVATE_COMPANION!>@set: JvmStatic<!>
+        @get: JvmStatic
+        @set: JvmStatic
         var staticVar3: Int = 42
 
-        <!JVM_STATIC_IN_PRIVATE_COMPANION!>@JvmStatic<!>
+        @JvmStatic
         fun staticFunction() {}
     }
 }
\ No newline at end of file