@@ -32,11 +32,11 @@
 /*!
  * @brief A block to be executed in a new thread.
  *
  * @return The object which should be returned when the thread is joined
  */
-typedef id OF_NULLABLE (^of_thread_block_t)(void);
+typedef id _Nullable (^of_thread_block_t)(void);
 #endif
 
 /*!
  * @class OFThread OFThread.h ObjFW/OFThread.h
  *