diff --git a/include/lws_config.h b/include/lws_config.h
index 5153f360335bceef50be277cfd3784cf072bf045..d7abb6f9b28e35ab6ddad0bfc2072fd12973bcbe 100644
--- a/include/lws_config.h
+++ b/include/lws_config.h
@@ -198,6 +198,7 @@
 /* #undef LWS_WITH_HTTP_PROXY */
 /* #undef LWS_WITH_HTTP_STREAM_COMPRESSION */
 #define LWS_WITH_HTTP_UNCOMMON_HEADERS
+#define LWS_WITH_IPV6
 /* #undef LWS_WITH_IPV6 */
 /* #undef LWS_WITH_JOSE */
 /* #undef LWS_WITH_CBOR */