diff --git a/src/server/main.c b/src/server/main.c
index f40e681e..42023c01 100644
--- a/src/server/main.c
+++ b/src/server/main.c
@@ -42,7 +42,6 @@
 #include <stdio.h>
 
 #if defined(_WIN32)
-#define WIN32
 #include <winsock2.h>
 #undef NS_ALL
 #include <process.h>