diff --git a/configure.ac b/configure.ac
index 1aa91452..271d1353 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,6 @@ AM_PROG_LIBTOOL
 dnl Checks for libraries.
 
 dnl Checks for header files.
-AC_HEADER_DIRENT
 AC_HEADER_SYS_WAIT
 AC_HEADER_STDBOOL
 
diff --git a/lib/defines.h b/lib/defines.h
index 9790fdab..c35f572d 100644
--- a/lib/defines.h
+++ b/lib/defines.h
@@ -117,21 +117,8 @@ static inline void memzero(void *ptr, size_t size)
 
 #define strzero(s) memzero(s, strlen(s))	/* warning: evaluates twice */
 
-#ifdef HAVE_DIRENT_H		/* DIR_SYSV */
-# include <dirent.h>
-# define DIRECT dirent
-#else
-# ifdef HAVE_SYS_NDIR_H		/* DIR_XENIX */
-#  include <sys/ndir.h>
-# endif
-# ifdef HAVE_SYS_DIR_H		/* DIR_??? */
-#  include <sys/dir.h>
-# endif
-# ifdef HAVE_NDIR_H		/* DIR_BSD */
-#  include <ndir.h>
-# endif
-# define DIRECT direct
-#endif
+#include <dirent.h>
+#define DIRECT dirent
 
 /*
  * Possible cases: