@@ -15,10 +15,12 @@
  */
 
 #import "OFException.h"
 #import "OFSeekableStream.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 /*!
  * @class OFSeekFailedException \
  *	  OFSeekFailedException.h ObjFW/OFSeekFailedException.h
  *
  * @brief An exception indicating that seeking in a stream failed.
@@ -76,5 +78,7 @@
 - initWithStream: (OFSeekableStream*)stream
 	  offset: (of_offset_t)offset
 	  whence: (int)whence
 	   errNo: (int)errNo;
 @end
+
+OF_ASSUME_NONNULL_END