diff --git a/src/tcpsockets/TCPConnector.cpp b/src/tcpsockets/TCPConnector.cpp
index deea22ee83..665500db18 100644
--- a/src/tcpsockets/TCPConnector.cpp
+++ b/src/tcpsockets/TCPConnector.cpp
@@ -34,6 +34,7 @@
 #include <netdb.h>
 #include <arpa/inet.h>
 #include <netinet/in.h>
+#include <sys/select.h>
 #endif
 
 #include "TCPStream.h"