diff --git a/libntfs/dir.c b/libntfs/dir.c
index 2be99423..f75e708b 100644
--- a/libntfs/dir.c
+++ b/libntfs/dir.c
@@ -21,9 +21,15 @@
 
 #include "config.h"
 
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
+#ifdef HAVE_STDLIB_H
+#	include <stdlib.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#	include <errno.h>
+#endif
+#ifdef HAVE_STRING_H
+#	include <string.h>
+#endif
 
 #include "types.h"
 #include "debug.h"