diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt
index 26e38438340..91e2db2b7df 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt
@@ -35,7 +35,6 @@ import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.types.isMarkedNullable
-import org.jetbrains.kotlin.ir.types.isNothing
 import org.jetbrains.kotlin.ir.types.toKotlinType
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
@@ -1376,11 +1375,6 @@ class ExpressionCodegen(
     }
 }
 
-private class DefaultArg(val index: Int)
-
-private class Vararg(val index: Int)
-
-
 fun DefaultCallArgs.generateOnStackIfNeeded(callGenerator: IrCallGenerator, isConstructor: Boolean, codegen: ExpressionCodegen): Boolean {
     val toInts = toInts()
     if (!toInts.isEmpty()) {