diff --git a/httplib.h b/httplib.h
index 7813cd4..3a72d55 100644
--- a/httplib.h
+++ b/httplib.h
@@ -218,7 +218,9 @@ using socket_t = SOCKET;
 #include <csignal>
 #include <pthread.h>
 #include <sys/mman.h>
-#include <sys/select.h>
+#ifndef __VMS
+  #include <sys/select.h>
+#endif
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <unistd.h>