@@ -14,10 +14,12 @@
  * file.
  */
 
 #import "OFObject.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 /*!
  * @class OFAutoreleasePool OFAutoreleasePool.h ObjFW/OFAutoreleasePool.h
  *
  * @brief A pool that keeps track of objects to release.
  *
@@ -74,5 +76,7 @@
 #endif
 extern id of_autorelease(id);
 #ifdef __cplusplus
 }
 #endif
+
+OF_ASSUME_NONNULL_END