@@ -17,10 +17,11 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <inttypes.h>
 
 #import "OFObject.h"
+#import "OFSerialization.h"
 
 typedef uint32_t of_unichar_t;
 
 /**
  * \brief The encoding of a string.
@@ -50,11 +51,12 @@
 @class OFURL;
 
 /**
  * \brief A class for handling strings.
  */
-@interface OFString: OFObject <OFCopying, OFMutableCopying, OFComparing>
+@interface OFString: OFObject <OFCopying, OFMutableCopying, OFComparing,
+    OFSerialization>
 {
 	char   *string;
 	size_t length;
 	BOOL   isUTF8;
 }