@@ -14,10 +14,12 @@
  * file.
  */
 
 #import "OFException.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 /*!
  * @class OFUnsupportedVersionException \
  *	  OFUnsupportedVersionException.h ObjFW/OFUnsupportedVersionException.h
  *
  * @brief An exception indicating that the specified version of the format or
@@ -47,5 +49,7 @@
  * @param version The version which is unsupported
  * @return An initialized unsupported version exception
  */
 - initWithVersion: (OFString*)version;
 @end
+
+OF_ASSUME_NONNULL_END