diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/BridgeLowering.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/BridgeLowering.kt
index 7a5bbbd4561..41fd0580635 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/BridgeLowering.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/BridgeLowering.kt
@@ -69,8 +69,6 @@ class BridgeLowering(val context: JvmBackendContext) : ClassLoweringPass {
         !isInterface(descriptor.containingDeclaration) || state.target !== JvmTarget.JVM_1_6 && descriptor.hasJvmDefaultAnnotation()
 
     override fun lower(irClass: IrClass) {
-        if (irClass.isFileClass) return
-
         val classDescriptor = irClass.descriptor
         if (classDescriptor is DefaultImplsClassDescriptor) {
             return /*TODO?*/
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrClass.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrClass.kt
index a852ec79d6d..bbf7d75e4ef 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrClass.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrClass.kt
@@ -35,7 +35,6 @@ interface IrClass : IrSymbolDeclaration<IrClassSymbol>, IrDeclarationWithVisibil
     val isData: Boolean
     val isExternal: Boolean
     val isInline: Boolean
-    val isFileClass: Boolean
 
     val superTypes: MutableList<IrType>
 
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrClassImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrClassImpl.kt
index 5884b8e042d..9f488cd01d9 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrClassImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrClassImpl.kt
@@ -44,8 +44,7 @@ class IrClassImpl(
     override val isInner: Boolean,
     override val isData: Boolean,
     override val isExternal: Boolean,
-    override val isInline: Boolean,
-    override val isFileClass: Boolean = false
+    override val isInline: Boolean
 ) :
     IrDeclarationBase(startOffset, endOffset, origin),
     IrClass {
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/lazy/IrLazyClass.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/lazy/IrLazyClass.kt
index 3721c529ab3..d6510bdec68 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/lazy/IrLazyClass.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/lazy/IrLazyClass.kt
@@ -66,8 +66,6 @@ class IrLazyClass(
         symbol.bind(this)
     }
 
-    override val isFileClass = false // file classes are never crated lazily
-
     override val annotations: MutableList<IrCall> = arrayListOf()
 
     override val descriptor: ClassDescriptor get() = symbol.descriptor