diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/ProvisionalFunctionExpressionLowering.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/ProvisionalFunctionExpressionLowering.kt
index 2fe4dd1c8d3..929757f20ea 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/ProvisionalFunctionExpressionLowering.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/ProvisionalFunctionExpressionLowering.kt
@@ -5,8 +5,11 @@
 
 package org.jetbrains.kotlin.backend.common.lower
 
+import org.jetbrains.kotlin.backend.common.BodyLoweringPass
 import org.jetbrains.kotlin.backend.common.FileLoweringPass
+import org.jetbrains.kotlin.ir.declarations.IrDeclaration
 import org.jetbrains.kotlin.ir.declarations.IrFile
+import org.jetbrains.kotlin.ir.expressions.IrBody
 import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.IrFunctionExpression
 import org.jetbrains.kotlin.ir.expressions.impl.IrBlockImpl
@@ -16,10 +19,10 @@ import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
 
 class ProvisionalFunctionExpressionLowering :
     IrElementTransformerVoid(),
-    FileLoweringPass {
+    BodyLoweringPass {
 
-    override fun lower(irFile: IrFile) {
-        irFile.transformChildrenVoid(this)
+    override fun lower(irBody: IrBody, container: IrDeclaration) {
+        irBody.transformChildrenVoid(this)
     }
 
     override fun visitFunctionExpression(expression: IrFunctionExpression): IrExpression {