diff --git a/analysis/light-classes-base/src/org/jetbrains/kotlin/asJava/elements/KtLightIdentifier.kt b/analysis/light-classes-base/src/org/jetbrains/kotlin/asJava/elements/KtLightIdentifier.kt
index ac8772025b7..ba070c80778 100644
--- a/analysis/light-classes-base/src/org/jetbrains/kotlin/asJava/elements/KtLightIdentifier.kt
+++ b/analysis/light-classes-base/src/org/jetbrains/kotlin/asJava/elements/KtLightIdentifier.kt
@@ -20,12 +20,15 @@ abstract class KtLightIdentifierBase(
     override fun getContainingFile() = lightOwner.containingFile
     override fun getTextRange() = origin?.textRange ?: TextRange.EMPTY_RANGE
     override fun getTextOffset(): Int = origin?.textOffset ?: -1
+    abstract override fun copy(): PsiElement
 }
 
 open class KtLightIdentifier(
     lightOwner: PsiElement,
     private val ktDeclaration: KtDeclaration?
 ) : KtLightIdentifierBase(lightOwner, ktDeclaration?.name) {
+    override fun copy(): PsiElement = KtLightIdentifier(parent, ktDeclaration)
+
     override val origin: PsiElement?
         get() = when (ktDeclaration) {
             is KtSecondaryConstructor -> ktDeclaration.getConstructorKeyword()
diff --git a/analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/SymbolLightIdentifier.kt b/analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/SymbolLightIdentifier.kt
index 28c77d21ac5..6a76b36169e 100644
--- a/analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/SymbolLightIdentifier.kt
+++ b/analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/SymbolLightIdentifier.kt
@@ -19,6 +19,7 @@ internal class SymbolLightIdentifier(
     lightOwner: PsiElement,
     private val ktSymbol: KtSymbol?
 ) : KtLightIdentifierBase(lightOwner, (ktSymbol as? KtNamedSymbol)?.name?.identifierOrNullIfSpecial) {
+    override fun copy(): PsiElement = SymbolLightIdentifier(parent, ktSymbol)
 
     override val origin: PsiElement?
         get() = when (val ktDeclaration = ktSymbol?.psi) {