diff --git a/src/config.h.in b/src/config.h.in
index 64794645e..9507bb141 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