diff --git a/lib/client-handshake.c b/lib/client-handshake.c
index 01a74d78..f78f4f19 100644
--- a/lib/client-handshake.c
+++ b/lib/client-handshake.c
@@ -19,6 +19,11 @@ lws_client_connect_2(struct lws *wsi)
 
 	lwsl_client("%s\n", __func__);
 
+	if (!wsi->u.hdr.ah) {
+		lwsl_err("ah was NULL at cc2\n");
+		goto oom4;
+	}
+
 	/* proxy? */
 
 	if (context->http_proxy_port) {