--- a/readtab.c
+++ b/readtab.c
@@ -29,7 +29,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <obstack.h>
+#include "obstack.h"
 #include <limits.h>
 #include <fnmatch.h>
 #include <unistd.h>