diff --git a/simgear/CMakeLists.txt b/simgear/CMakeLists.txt
index e5c1b719..313ea78f 100644
--- a/simgear/CMakeLists.txt
+++ b/simgear/CMakeLists.txt
@@ -136,7 +136,8 @@ target_link_libraries(SimGearCore
     ${DL_LIBRARY}
     ${CMAKE_THREAD_LIBS_INIT}
     ${COCOA_LIBRARY}
-    ${CURL_LIBRARIES})
+    ${CURL_LIBRARIES}
+    ${WINSOCK_LIBRARY})
 
 if(SYSTEM_EXPAT)
     target_link_libraries(SimGearCore