diff --git a/btgui/enet/premake4.lua b/btgui/enet/premake4.lua
index e006ca55d..f5aefe3d5 100644
--- a/btgui/enet/premake4.lua
+++ b/btgui/enet/premake4.lua
@@ -7,6 +7,7 @@
 			files{"win32.c"}
 		end
 		if os.is("Linux") then
+		 defines {"HAS_SOCKLEN_T"}
 			files {"unix.c",}
 		end
 		if os.is("MacOSX") then