diff --git a/pyconfig.h.in b/pyconfig.h.in
index da6197c..e9a4cac 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -650,6 +650,9 @@
 /* Define to 1 if you have the `round' function. */
 #undef HAVE_ROUND
 
+/* Define to 1 if you have the <sched.h> header file. */
+#undef HAVE_SCHED_H
+
 /* Define to 1 if you have the `select' function. */
 #undef HAVE_SELECT