@@ -16,11 +16,11 @@
 
 #import <Foundation/NSDictionary.h>
 
 #import "NSBridging.h"
 
-NS_ASSUME_NONNULL_BEGIN
+OF_ASSUME_NONNULL_BEGIN
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 extern int _NSDictionary_OFObject_reference;
@@ -35,6 +35,6 @@
  * @brief Support for bridging NSDictionaries to OFDictionaries.
  */
 @interface NSDictionary (OFObject) <NSBridging>
 @end
 
-NS_ASSUME_NONNULL_END
+OF_ASSUME_NONNULL_END