diff --git a/applications/present3D/CMakeLists.txt b/applications/present3D/CMakeLists.txt
index 9020d7cb0..beb116d45 100644
--- a/applications/present3D/CMakeLists.txt
+++ b/applications/present3D/CMakeLists.txt
@@ -53,4 +53,8 @@ ENDIF(SDL_FOUND)
 
 SET(TARGET_ADDED_LIBRARIES osgVolume osgFX)
 
+IF   (WIN32)
+   SET(TARGET_EXTERNAL_LIBRARIES ws2_32)
+ENDIF(WIN32)
+
 SETUP_APPLICATION(present3D-osg)