diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFileDeserializer.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFileDeserializer.kt
index 0b611f6212d..5e003f66dcf 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFileDeserializer.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFileDeserializer.kt
@@ -1218,7 +1218,8 @@ abstract class IrFileDeserializer(
                     isLateinit = proto.isLateinit,
                     isDelegated = proto.isDelegated,
                     isExpect = proto.isExpect,
-                    isExternal = proto.isExternal
+                    isExternal = proto.isExternal,
+                    isFakeOverride = origin == IrDeclarationOrigin.FAKE_OVERRIDE
                 )
             }.apply {
                 if (proto.hasGetter()) {