@@ -15,17 +15,19 @@
  */
 
 #import "OFObject.h"
 #import "OFSerialization.h"
 #import "OFJSONRepresentation.h"
+#import "OFBinaryPackRepresentation.h"
 
 /*!
  * @brief A class for representing null values in collections.
  */
-@interface OFNull: OFObject <OFCopying, OFSerialization, OFJSONRepresentation>
+@interface OFNull: OFObject <OFCopying, OFSerialization, OFJSONRepresentation,
+    OFBinaryPackRepresentation>
 /*!
  * @brief Returns an OFNull singleton.
  *
  * @return An OFNull singleton
  */
 + (OFNull*)null;
 @end