diff --git a/pyconfig.h.in b/pyconfig.h.in
index a9f3d20..34501f4 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -512,6 +512,9 @@
 /* Define to 1 if you have the <sys/file.h> header file. */
 #undef HAVE_SYS_FILE_H
 
+/* Define to 1 if you have the <sys/loadavg.h> header file. */
+#undef HAVE_SYS_LOADAVG_H
+
 /* Define to 1 if you have the <sys/lock.h> header file. */
 #undef HAVE_SYS_LOCK_H