diff --git a/sc2/build/unix/build.config b/sc2/build/unix/build.config
index 5ea281b0b..605da4336 100644
--- a/sc2/build/unix/build.config
+++ b/sc2/build/unix/build.config
@@ -230,6 +230,9 @@ uqm_prepare_config()
 	CHOICE_netplay_OPTION_full_ACTION=netplay_full_action
 	netplay_full_action() {
 		CFLAGS="$CFLAGS -DNETPLAY=NETPLAY_FULL"
+		if [ -n "$MACRO_WIN32" ]; then
+			CFLAGS="$CFLAGS -lws2_32"
+		fi
 		NETPLAY="FULL"
 	}
 	CHOICE_netplay_OPTION_ipv4_TITLE="IPv4; no IPv6 (experimental)"