diff --git a/src/compat.h b/src/compat.h
index 79a297e5e4..2578d6d344 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -34,6 +34,7 @@
 #else
 #include <sys/fcntl.h>
 #include <sys/mman.h>
+#include <sys/select.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <net/if.h>