diff --git a/deps/miniupnpc/minissdpc.c b/deps/miniupnpc/minissdpc.c
index c2a00319ef..a6544787ec 100644
--- a/deps/miniupnpc/minissdpc.c
+++ b/deps/miniupnpc/minissdpc.c
@@ -584,7 +584,7 @@ ssdpDiscoverDevices(const char * const deviceTypes[],
 						struct in_addr mc_if;
 						memset(&mc_if, 0, sizeof(mc_if));
 						mc_if.s_addr = pIPAddrTable->table[i].dwAddr;
-						setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_IF, (const char *)&mc_if, sizeof(mc_if)) < 0;
+						setsockopt(sudp, IPPROTO_IP, IP_MULTICAST_IF, (const char *)&mc_if, sizeof(mc_if));
 						((struct sockaddr_in *)&sockudp_r)->sin_addr.s_addr = pIPAddrTable->table[i].dwAddr;
 #ifndef DEBUG
 						break;