@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
+ * Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
  *
  * All rights reserved.
  *
  * This file is part of ObjFW. It may be distributed under the terms of the
  * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
@@ -15,21 +15,20 @@
 
 #import "OFObject.h"
 #import "OFASN1DERRepresentation.h"
 #import "OFJSONRepresentation.h"
 #import "OFMessagePackRepresentation.h"
-#import "OFSerialization.h"
 
 OF_ASSUME_NONNULL_BEGIN
 
 /**
  * @class OFNull OFNull.h ObjFW/OFNull.h
  *
  * @brief A class for representing null values in collections.
  */
 OF_SUBCLASSING_RESTRICTED
-@interface OFNull: OFObject <OFCopying, OFSerialization, OFJSONRepresentation,
+@interface OFNull: OFObject <OFCopying, OFJSONRepresentation,
     OFMessagePackRepresentation, OFASN1DERRepresentation>
 /**
  * @brief Returns an OFNull singleton.
  *
  * @return An OFNull singleton