diff --git a/lib/client-handshake.c b/lib/client-handshake.c
index f8d0b692..d3d3daaa 100644
--- a/lib/client-handshake.c
+++ b/lib/client-handshake.c
@@ -80,6 +80,11 @@ struct libwebsocket *__libwebsocket_client_connect_2(
 	if (connect(wsi->sock, (struct sockaddr *)&server_addr,
 					     sizeof(struct sockaddr)) == -1)  {
 		fprintf(stderr, "Connect failed\n");
+#ifdef WIN32
+		closesocket(wsi->sock);
+#else
+		close(wsi->sock);
+#endif
 		goto oom4;
 	}