diff --git a/net.h b/net.h
index e575d50..2e9821e 100644
--- a/net.h
+++ b/net.h
@@ -34,6 +34,7 @@
 
 #include <sys/stat.h>
 #include <sys/socket.h>
+#include <sys/select.h>
 #include <netinet/in.h>
 #include <sys/types.h>
 #include <sys/fcntl.h>