# include <cups/cups.h>
# include <cups/language.h>
-# include <cups/debug.h>
-# include <stdlib.h>
-# include <ctype.h>
-# include <errno.h>
+# include <cups/debug-private.h>
# include <fcntl.h>
# include <sys/stat.h>
# if defined(WIN32) || defined(__EMX__)