diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/ExpectSymbolTransformer.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/ExpectSymbolTransformer.kt
index dc17d977f37..dae14523246 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/ExpectSymbolTransformer.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/ExpectSymbolTransformer.kt
@@ -17,6 +17,7 @@ import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrConstructorSymbol
 import org.jetbrains.kotlin.ir.symbols.IrPropertySymbol
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
+import org.jetbrains.kotlin.ir.util.isExpect
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitorVoid
 
 /**
diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/descriptorBasedUtils.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/descriptorBasedUtils.kt
deleted file mode 100644
index 71505ebf9e1..00000000000
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/descriptorBasedUtils.kt
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright 2010-2019 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.backend.common.ir
-
-import org.jetbrains.kotlin.ir.declarations.*
-
-val IrDeclaration.isExpect
-    get() = this is IrClass && isExpect ||
-            this is IrFunction && isExpect ||
-            this is IrProperty && isExpect
-
-// The original isExpect represents what user has written.
-// This predicate means "there can possibly exist an 'actual' for the given declaration".
-// Shouldn't it be incorporated to descriptor -> ir declaration psi2ir translation phase?
-val IrDeclaration.isProperExpect: Boolean
-    get() = this is IrClass && isExpect ||
-            this is IrFunction && isExpect ||
-            this is IrProperty && isExpect ||
-            (this is IrClass || this is IrFunction || this is IrProperty || this is IrEnumEntry || this is IrTypeParameter)
-            && (this.parent as? IrDeclaration)?.isProperExpect ?: false
-
diff --git a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/export/ExportModelGenerator.kt b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/export/ExportModelGenerator.kt
index ac89f96e6d1..13d3bf63ded 100644
--- a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/export/ExportModelGenerator.kt
+++ b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/export/ExportModelGenerator.kt
@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.ir.backend.js.export
 
-import org.jetbrains.kotlin.backend.common.ir.isExpect
+import org.jetbrains.kotlin.ir.util.isExpect
 import org.jetbrains.kotlin.config.CommonConfigurationKeys
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
diff --git a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/EnumClassLowering.kt b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/EnumClassLowering.kt
index 5cf711bb597..6df1076eda1 100644
--- a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/EnumClassLowering.kt
+++ b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/EnumClassLowering.kt
@@ -8,7 +8,7 @@ package org.jetbrains.kotlin.ir.backend.js.lower
 import org.jetbrains.kotlin.backend.common.BodyLoweringPass
 import org.jetbrains.kotlin.backend.common.DeclarationTransformer
 import org.jetbrains.kotlin.backend.common.getOrPut
-import org.jetbrains.kotlin.backend.common.ir.isExpect
+import org.jetbrains.kotlin.ir.util.isExpect
 import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.backend.common.lower.irBlockBody
 import org.jetbrains.kotlin.backend.common.lower.irIfThen
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/FakeOverridesActualizer.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/FakeOverridesActualizer.kt
index e96aa67cc92..3a705d2bada 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/FakeOverridesActualizer.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/FakeOverridesActualizer.kt
@@ -5,13 +5,13 @@
 
 package org.jetbrains.kotlin.backend.common.actualizer
 
-import org.jetbrains.kotlin.backend.common.ir.isExpect
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.declarations.IrClass
 import org.jetbrains.kotlin.ir.declarations.IrDeclaration
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationBase
 import org.jetbrains.kotlin.ir.declarations.IrOverridableDeclaration
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
+import org.jetbrains.kotlin.ir.util.isExpect
 import org.jetbrains.kotlin.ir.util.isFakeOverride
 import org.jetbrains.kotlin.ir.util.transformInPlace
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitorVoid
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/IrUtils.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/IrUtils.kt
index 099e960f33d..62faf52e1f6 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/IrUtils.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/IrUtils.kt
@@ -1570,4 +1570,9 @@ val IrDeclaration.parentsWithSelf: Sequence<IrDeclarationParent>
     get() = generateSequence(this as? IrDeclarationParent) { (it as? IrDeclaration)?.parent }
 
 val IrDeclaration.parents: Sequence<IrDeclarationParent>
-    get() = generateSequence(parent) { (it as? IrDeclaration)?.parent }
\ No newline at end of file
+    get() = generateSequence(parent) { (it as? IrDeclaration)?.parent }
+
+val IrDeclaration.isExpect
+    get() = this is IrClass && isExpect ||
+            this is IrFunction && isExpect ||
+            this is IrProperty && isExpect
\ No newline at end of file
diff --git a/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/lower/serialization/ir/JsExportUtils.kt b/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/lower/serialization/ir/JsExportUtils.kt
index 77f1cfba575..9074dde775a 100644
--- a/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/lower/serialization/ir/JsExportUtils.kt
+++ b/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/lower/serialization/ir/JsExportUtils.kt
@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.ir.backend.js.lower.serialization.ir
 
-import org.jetbrains.kotlin.backend.common.ir.isExpect
+import org.jetbrains.kotlin.ir.util.isExpect
 import org.jetbrains.kotlin.ir.declarations.IrAnnotationContainer
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationWithName
 import org.jetbrains.kotlin.ir.declarations.IrFile
diff --git a/compiler/tests-common/tests/org/jetbrains/kotlin/klib/AbstractKlibIrTextTestCase.kt b/compiler/tests-common/tests/org/jetbrains/kotlin/klib/AbstractKlibIrTextTestCase.kt
index 241e8a9b987..ebfb329691d 100644
--- a/compiler/tests-common/tests/org/jetbrains/kotlin/klib/AbstractKlibIrTextTestCase.kt
+++ b/compiler/tests-common/tests/org/jetbrains/kotlin/klib/AbstractKlibIrTextTestCase.kt
@@ -9,7 +9,7 @@ import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElement
 import junit.framework.TestCase
 import org.jetbrains.kotlin.backend.common.CommonKLibResolver
-import org.jetbrains.kotlin.backend.common.ir.isExpect
+import org.jetbrains.kotlin.ir.util.isExpect
 import org.jetbrains.kotlin.backend.common.linkage.issues.checkNoUnboundSymbols
 import org.jetbrains.kotlin.backend.common.linkage.partial.PartialLinkageSupportForLinker
 import org.jetbrains.kotlin.backend.common.serialization.CompatibilityMode