diff --git a/compiler/light-classes-base/src/org/jetbrains/kotlin/asJava/classes/KtLightClassBase.kt b/compiler/light-classes-base/src/org/jetbrains/kotlin/asJava/classes/KtLightClassBase.kt
index 120e76c53bb..99d3fbf4073 100644
--- a/compiler/light-classes-base/src/org/jetbrains/kotlin/asJava/classes/KtLightClassBase.kt
+++ b/compiler/light-classes-base/src/org/jetbrains/kotlin/asJava/classes/KtLightClassBase.kt
@@ -24,7 +24,8 @@ abstract class KtLightClassBase protected constructor(
         lazyCreator = LightClassesLazyCreator(project)
     )
 
-    override fun getDelegate() = invalidAccess()
+    override fun getDelegate() =
+        throw UnsupportedOperationException("Cls delegate shouldn't be loaded for ultra-light classes!")
 
     override fun getFields() = myInnersCache.fields
 
diff --git a/compiler/light-classes-base/src/org/jetbrains/kotlin/asJava/classes/ultraLightUtils.kt b/compiler/light-classes-base/src/org/jetbrains/kotlin/asJava/classes/ultraLightUtils.kt
deleted file mode 100644
index fa8d1fd108d..00000000000
--- a/compiler/light-classes-base/src/org/jetbrains/kotlin/asJava/classes/ultraLightUtils.kt
+++ /dev/null
@@ -1,9 +0,0 @@
-/*
- * Copyright 2010-2022 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.asJava.classes
-
-internal fun <L : Any> L.invalidAccess(): Nothing =
-    error("Cls delegate shouldn't be loaded for not too complex ultra-light classes! Qualified name: ${javaClass.name}")