diff --git a/uppsrc/Core/Core.upp b/uppsrc/Core/Core.upp
index 89e7e9728..6c6a17c1f 100644
--- a/uppsrc/Core/Core.upp
+++ b/uppsrc/Core/Core.upp
@@ -17,7 +17,7 @@ library(WIN32 !MSC8ARM) "advapi32 shell32 winmm mpr";
 
 library(SOLARIS) "posix4 dl";
 
-library(WIN32 GCC) "ole32 oleaut32 uuid";
+library(WIN32 GCC) "ole32 oleaut32 uuid ws2_32";
 
 library(MSC8ARM WIN32) "coredll.lib corelibc.lib ole32.lib oleaut32.lib uuid.lib commctrl.lib ccrtrtti.lib";