diff --git a/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/GeneratorHelpers.kt b/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/GeneratorHelpers.kt
index 2acab1b6317..9a20342f7f8 100644
--- a/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/GeneratorHelpers.kt
+++ b/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/GeneratorHelpers.kt
@@ -116,7 +116,7 @@ interface IrBuilderExtension {
         irInvoke(
             dispatchReceiver,
             callee,
-            args = valueArguments.toTypedArray(),
+            *valueArguments.toTypedArray(),
             typeHint = returnTypeHint
         ).also { call -> typeArguments.forEachIndexed(call::putTypeArgument) }
 
@@ -590,7 +590,7 @@ interface IrBuilderExtension {
         kType,
         genericIndex
     ) { it, _ ->
-        val (prop, ir) = enclosingGenerator.localSerializersFieldsDescriptors[it]
+        val (_, ir) = enclosingGenerator.localSerializersFieldsDescriptors[it]
         irGetField(irGet(dispatchReceiverParameter), ir.backingField!!)
     }
 
diff --git a/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerForInlineClassGenerator.kt b/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerForInlineClassGenerator.kt
index 6ad6cce9d9c..e684ad06999 100644
--- a/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerForInlineClassGenerator.kt
+++ b/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerForInlineClassGenerator.kt
@@ -80,7 +80,7 @@ class SerializerForInlineClassGenerator(
         }, {
             decoderClass.referenceMethod("${CallingConventions.decode}${it.elementMethodPrefix}") to listOf()
         }, returnTypeHint = inlinedType)
-        val value = coerceToBox(actualCall, inlinedType, loadFunc.returnType)
+        val value = coerceToBox(actualCall, loadFunc.returnType)
         +irReturn(value)
     }
 
@@ -101,7 +101,7 @@ class SerializerForInlineClassGenerator(
 
     // Compiler will elide these in corresponding inline class lowerings (when serialize/deserialize functions will be split in two)
 
-    private fun IrBlockBodyBuilder.coerceToBox(expression: IrExpression, propertyType: IrType, inlineClassBoxType: IrType): IrExpression =
+    private fun IrBlockBodyBuilder.coerceToBox(expression: IrExpression, inlineClassBoxType: IrType): IrExpression =
         irInvoke(
             null,
             serializableIrClass.constructors.single { it.isPrimary }.symbol,
diff --git a/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerIrGenerator.kt b/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerIrGenerator.kt
index d830bc55b1c..b6d23e642e4 100644
--- a/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerIrGenerator.kt
+++ b/plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/SerializerIrGenerator.kt
@@ -70,8 +70,8 @@ open class SerializerIrGenerator(
             prop = generateSimplePropertyWithBackingField(desc, irClass)
 
             // TODO: Do not use descriptors here
-            localSerializersFieldsDescriptors = findLocalSerializersFieldDescriptors().map { it ->
-                it to generateSimplePropertyWithBackingField(it, irClass)
+            localSerializersFieldsDescriptors = findLocalSerializersFieldDescriptors().map { descriptor ->
+                descriptor to generateSimplePropertyWithBackingField(descriptor, irClass)
             }
         }