@@ -14,17 +14,17 @@
  * file.
  */
 
 #import "OFStream.h"
 
-OF_ASSUME_NONNULL_BEGIN
-
 #if defined(OF_MORPHOS) && !defined(OF_IXEMUL)
 # define BOOL EXEC_BOOL
 # include <proto/dos.h>
 # undef BOOL
 #endif
+
+OF_ASSUME_NONNULL_BEGIN
 
 /*!
  * @class OFStdIOStream OFStdIOStream.h ObjFW/OFStdIOStream.h
  *
  * @brief A class for providing standard input, output and error as OFStream.