@@ -23,10 +23,12 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
 
 #import "OFSeekableStream.h"
+
+OF_ASSUME_NONNULL_BEGIN
 
 @class OFArray OF_GENERIC(ObjectType);
 @class OFDate;
 
 #if defined(_WIN32)
@@ -327,5 +329,7 @@
 extern int of_stat(OFString *path, of_stat_t *buffer);
 extern int of_lstat(OFString *path, of_stat_t *buffer);
 #ifdef __cplusplus
 }
 #endif
+
+OF_ASSUME_NONNULL_END