diff --git a/src/config.h.in b/src/config.h.in
index 64794645ed124b90998b6bf71c9f523d153503f4..9507bb1418a2cad4d67d65198ca9a82398c910d4 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -25,3 +25,6 @@
 
 /* Define if you have the <sys/select.h> header file */
 #undef HAVE_SYS_SELECT_H
+
+/* Define if you have the <sys/poll.h> header file */
+#undef HAVE_SYS_POLL_H