diff --git a/src/osgPlugins/ZeroConfDevice/CMakeLists.txt b/src/osgPlugins/ZeroConfDevice/CMakeLists.txt
index 33e065dee..5287cfced 100755
--- a/src/osgPlugins/ZeroConfDevice/CMakeLists.txt
+++ b/src/osgPlugins/ZeroConfDevice/CMakeLists.txt
@@ -30,6 +30,7 @@ ELSE()
             AutoDiscoveryBonjourImpl.h
             AutoDiscoveryBonjourImpl.mm
         )
+        SET(TARGET_LIBRARIES_VARS COCOA_LIBRARY )
     ENDIF(APPLE)
 ENDIF(WIN32)