diff --git a/thirdparty/miniupnpc/miniupnpc/minissdpc.c b/thirdparty/miniupnpc/miniupnpc/minissdpc.c
index 29f8110155..ea9af02e1f 100644
--- a/thirdparty/miniupnpc/miniupnpc/minissdpc.c
+++ b/thirdparty/miniupnpc/miniupnpc/minissdpc.c
@@ -683,11 +683,7 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
 #endif
 		} else {
 			struct in_addr mc_if;
-#if defined(_WIN32) && (_WIN32_WINNT >= _WIN32_WINNT_VISTA)
-			InetPtonA(AF_INET, multicastif, &mc_if);
-#else
 			mc_if.s_addr = inet_addr(multicastif); /* ex: 192.168.x.x */
-#endif
 			if(mc_if.s_addr != INADDR_NONE)
 			{
 				((struct sockaddr_in *)&sockudp_r)->sin_addr.s_addr = mc_if.s_addr;