diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/Lower.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/Lower.kt
index 1af9c4d853c..8bfc79d116a 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/Lower.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/Lower.kt
@@ -139,6 +139,15 @@ fun BodyLoweringPass.runOnFilePostfix(irFile: IrFile, withLocalDeclarations: Boo
                     }
                 }
             }
+
+            override fun visitScript(declaration: IrScript, data: IrDeclaration?) {
+                ArrayList(declaration.declarations).forEach { it.accept(this, declaration) }
+                if (withLocalDeclarations) {
+                    declaration.statements.forEach { it.accept(this, null) }
+                }
+                declaration.thisReceiver.accept(this, declaration)
+            }
+
         }, null)
     }
 }
@@ -239,6 +248,17 @@ fun DeclarationTransformer.runPostfix(withLocalDeclarations: Boolean = false): D
 
                     declaration.declarations.transformFlat(this@runPostfix::transformFlatRestricted)
                 }
+
+                override fun visitScript(declaration: IrScript) {
+                    ArrayList(declaration.declarations).forEach { it.accept(this, null) }
+                    declaration.declarations.transformFlat(this@runPostfix::transformFlatRestricted)
+
+                    if (withLocalDeclarations) {
+                        declaration.statements.forEach { it.accept(this, null) }
+                    }
+
+                    declaration.thisReceiver.accept(this, null)
+                }
             })
 
             return this@runPostfix.transformFlatRestricted(declaration)