diff --git a/src/osgPlugins/osc/CMakeLists.txt b/src/osgPlugins/osc/CMakeLists.txt
index 0529e17e5..0997edb13 100644
--- a/src/osgPlugins/osc/CMakeLists.txt
+++ b/src/osgPlugins/osc/CMakeLists.txt
@@ -30,6 +30,8 @@ SET(TARGET_H
 )
 
 if(WIN32 AND NOT ANDROID)
+    ADD_DEFINITIONS(-D_WINSOCK_DEPRECATED_NO_WARNINGS)
+
     SET(TARGET_SRC
         ${TARGET_SRC}
         ip/win32/NetworkingUtils.cpp