diff --git a/src/doomdef.h b/src/doomdef.h
index 66e649ee0..fb8ab1ca2 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -60,6 +60,7 @@
 #endif
 
 #ifdef _WINDOWS
+#define NONET
 #if !defined (HWRENDER) && !defined (NOHW)
 #define HWRENDER
 #endif
diff --git a/src/i_tcp.c b/src/i_tcp.c
index eca218c80..f6212458b 100644
--- a/src/i_tcp.c
+++ b/src/i_tcp.c
@@ -56,7 +56,9 @@
 //#define NONET
 #endif
 
-#ifndef NONET
+#ifdef NONET
+#undef HAVE_MINIUPNPC
+#else
 #ifdef USE_WINSOCK1
 #include <winsock.h>
 #elif !defined (SCOUW2) && !defined (SCOUW7) && !defined (__OS2__)