diff --git a/pyconfig.h.in b/pyconfig.h.in
index 8c9fd16..9dbcd1e 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -688,6 +688,9 @@
 /* Define to 1 if you have the <sys/stat.h> header file. */
 #undef HAVE_SYS_STAT_H
 
+/* Define to 1 if you have the <sys/termio.h> header file. */
+#undef HAVE_SYS_TERMIO_H
+
 /* Define to 1 if you have the <sys/times.h> header file. */
 #undef HAVE_SYS_TIMES_H