diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirConstructorImpl.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirConstructorImpl.kt
index 49646e58cb2..57e925ae0ef 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirConstructorImpl.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirConstructorImpl.kt
@@ -7,15 +7,25 @@ package org.jetbrains.kotlin.fir.declarations.impl
 
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.fir.FirElement
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.declarations.FirConstructor
 import org.jetbrains.kotlin.fir.expressions.FirBody
 import org.jetbrains.kotlin.fir.expressions.FirDelegatedConstructorCall
+import org.jetbrains.kotlin.fir.transformSingle
+import org.jetbrains.kotlin.fir.visitors.FirTransformer
 
 open class FirConstructorImpl(
     session: FirSession,
     psi: PsiElement?,
     final override val visibility: Visibility,
-    final override val delegatedConstructor: FirDelegatedConstructorCall?,
+    final override var delegatedConstructor: FirDelegatedConstructorCall?,
     body: FirBody?
-) : FirAbstractFunction(session, psi, body), FirConstructor
\ No newline at end of file
+) : FirAbstractFunction(session, psi, body), FirConstructor {
+
+    override fun <D> transformChildren(transformer: FirTransformer<D>, data: D): FirElement {
+        delegatedConstructor = delegatedConstructor?.transformSingle(transformer, data)
+
+        return super<FirAbstractFunction>.transformChildren(transformer, data)
+    }
+}
\ No newline at end of file
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirDelegatedConstructorCall.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirDelegatedConstructorCall.kt
index 2d695948180..639daf96198 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirDelegatedConstructorCall.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirDelegatedConstructorCall.kt
@@ -9,7 +9,7 @@ import org.jetbrains.kotlin.fir.types.FirType
 import org.jetbrains.kotlin.fir.types.FirTypeProjectionContainer
 import org.jetbrains.kotlin.fir.visitors.FirVisitor
 
-interface FirDelegatedConstructorCall : FirCall, FirTypeProjectionContainer {
+interface FirDelegatedConstructorCall : FirCall {
     // Do we need 'constructedType: FirType' here?
     val constructedType: FirType
 
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/impl/FirDelegatedConstructorCallImpl.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/impl/FirDelegatedConstructorCallImpl.kt
index 0d9b21037ab..4408d935948 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/impl/FirDelegatedConstructorCallImpl.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/impl/FirDelegatedConstructorCallImpl.kt
@@ -6,16 +6,22 @@
 package org.jetbrains.kotlin.fir.expressions.impl
 
 import com.intellij.psi.PsiElement
+import org.jetbrains.kotlin.fir.FirElement
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.expressions.FirDelegatedConstructorCall
+import org.jetbrains.kotlin.fir.transformSingle
 import org.jetbrains.kotlin.fir.types.FirType
-import org.jetbrains.kotlin.fir.types.FirTypeProjection
+import org.jetbrains.kotlin.fir.visitors.FirTransformer
 
 class FirDelegatedConstructorCallImpl(
     session: FirSession,
     psi: PsiElement?,
-    override val constructedType: FirType,
+    override var constructedType: FirType,
     override val isThis: Boolean
 ) : FirAbstractCall(session, psi), FirDelegatedConstructorCall {
-    override val typeArguments = mutableListOf<FirTypeProjection>()
+    override fun <D> transformChildren(transformer: FirTransformer<D>, data: D): FirElement {
+        constructedType = constructedType.transformSingle(transformer, data)
+
+        return this
+    }
 }
\ No newline at end of file