diff --git a/miniupnpc/minissdpc.c b/miniupnpc/minissdpc.c
index cb12c59..7f68fc5 100644
--- a/miniupnpc/minissdpc.c
+++ b/miniupnpc/minissdpc.c
@@ -570,12 +570,7 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
  * in order to give this ip to setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_IF) */
 	if(!ipv6) {
 		DWORD ifbestidx;
-		SOCKADDR_IN destAddr;
-		memset(&destAddr, 0, sizeof(destAddr));
-		destAddr.sin_family = AF_INET;
-		destAddr.sin_addr.s_addr = inet_addr("223.255.255.255");
-		destAddr.sin_port = 0;
-		if (GetBestInterfaceEx((struct sockaddr *)&destAddr, &ifbestidx) == NO_ERROR) {
+		if (GetBestInterface(inet_addr("223.255.255.255"), &ifbestidx) == NO_ERROR) {
 			DWORD dwRetVal = NO_ERROR;
 			PIP_ADAPTER_ADDRESSES pAddresses = NULL;
 			ULONG outBufLen = 15360;