diff --git a/lib/select.h b/lib/select.h
index ce7b2f89778b775fe57a85469b797d36db1164c1..a97947e40dc50f69e427b100515efd7c198009b9 100644
--- a/lib/select.h
+++ b/lib/select.h
@@ -46,7 +46,7 @@
  * Definition of pollfd struct and constants for platforms lacking them.
  */
 
-#ifndef HAVE_POLL
+#ifndef HAVE_SYS_POLL_H
 
 #define POLLIN      0x01
 #define POLLPRI     0x02