@@ -18,10 +18,12 @@
 #import <Foundation/NSString.h>
 
 #import "NSBridging.h"
 
 OF_ASSUME_NONNULL_BEGIN
+
+@class OFString;
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 extern int _NSString_OFObject_reference;
@@ -38,8 +40,9 @@
  * Unfortunately, they need to be copied, as NSString is not capable of
  * handling UCS-4 properly (a character of NSString is only 2 bytes, while a
  * character of OFString is 4).
  */
 @interface NSString (OFObject) <NSBridging>
+@property (readonly, nonatomic) OFString *OFObject;
 @end
 
 OF_ASSUME_NONNULL_END