@@ -14,10 +14,12 @@
  * file.
  */
 
 @class OFString;
 
+OF_ASSUME_NONNULL_BEGIN
+
 enum {
 	OF_JSON_REPRESENTATION_PRETTY	  = 0x01,
 	OF_JSON_REPRESENTATION_JSON5	  = 0x02,
 	OF_JSON_REPRESENTATION_IDENTIFIER = 0x10
 };
@@ -53,5 +55,7 @@
  *
  * @return The JSON representation of the object as a string
  */
 - (OFString*)JSONRepresentationWithOptions: (int)options;
 @end
+
+OF_ASSUME_NONNULL_END