@@ -12,10 +12,14 @@
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
+#import "OFObject.h"
+
+OF_ASSUME_NONNULL_BEGIN
+
 @class OFDataArray;
 
 /*!
  * @protocol OFMessagePackRepresentation
  *	     OFMessagePackRepresentation.h ObjFW/OFMessagePackRepresentation.h
@@ -30,5 +34,7 @@
  *
  * @return The MessagePack representation of the object as an OFDataArray.
  */
 - (OFDataArray*)messagePackRepresentation;
 @end
+
+OF_ASSUME_NONNULL_END