diff --git a/src/vscp/daemon/controlobject.cpp b/src/vscp/daemon/controlobject.cpp
index 0209f3150..53f9e387d 100644
--- a/src/vscp/daemon/controlobject.cpp
+++ b/src/vscp/daemon/controlobject.cpp
@@ -31,6 +31,7 @@
 #define _POSIX
 
 #ifdef WIN32
+#include <winsock2.h>
 #include <nb30.h>
 #include <pch.h>
 #endif