diff --git a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/MoveBodilessDeclarationsToSeparatePlace.kt b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/MoveBodilessDeclarationsToSeparatePlace.kt
index 2094c8c9222..c801f64c059 100644
--- a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/MoveBodilessDeclarationsToSeparatePlace.kt
+++ b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/MoveBodilessDeclarationsToSeparatePlace.kt
@@ -39,7 +39,8 @@ fun moveBodilessDeclarationsToSeparatePlace(context: JsIrBackendContext, module:
         "Short",
         "Int",
         "Float",
-        "Double"
+        "Double",
+        "Function"
     ).map { Name.identifier(it) }.toSet()
 
     fun isBuiltInClass(declaration: IrDeclaration): Boolean =