@@ -15,10 +15,11 @@
  */
 
 #include <unistd.h>
 
 #import "OFObject.h"
+#import "OFSerialization.h"
 
 /**
  * \brief The type of a number.
  */
 typedef enum of_number_type_t {
@@ -51,11 +52,11 @@
 } of_number_type_t;
 
 /**
  * \brief Provides a way to store a number in an object.
  */
-@interface OFNumber: OFObject <OFCopying>
+@interface OFNumber: OFObject <OFCopying, OFSerialization>
 {
 	union of_number_value {
 		BOOL	       bool_;
 		signed char    char_;
 		signed short   short_;