@@ -25,10 +25,11 @@
 #include <inttypes.h>
 
 #import "OFObject.h"
 #import "OFSerialization.h"
 #import "OFJSONRepresentation.h"
+#import "OFBinaryPackRepresentation.h"
 
 @class OFConstantString;
 
 #if defined(__cplusplus) && __cplusplus >= 201103L
 typedef char16_t of_char16_t;
@@ -76,11 +77,11 @@
 
 /*!
  * @brief A class for handling strings.
  */
 @interface OFString: OFObject <OFCopying, OFMutableCopying, OFComparing,
-    OFSerialization, OFJSONRepresentation>
+    OFSerialization, OFJSONRepresentation, OFBinaryPackRepresentation>
 #ifdef OF_HAVE_PROPERTIES
 @property (readonly) size_t length;
 #endif
 
 /*!