@@ -14,10 +14,12 @@
  * file.
  */
 
 #import "OFList.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 /*!
  * @class OFSortedList OFSortedList.h ObjFW/OFSortedList.h
  *
  * @brief A class which provides easy to use sorted double-linked lists.
  *
@@ -41,5 +43,7 @@
 - (of_list_object_t*)insertObject: (ObjectType <OFComparing>)object;
 @end
 #if !defined(OF_HAVE_GENERICS) && !defined(DOXYGEN)
 # undef ObjectType
 #endif
+
+OF_ASSUME_NONNULL_END