diff --git a/lib/setup.h b/lib/setup.h
index b8d62d417..bcfd3835d 100644
--- a/lib/setup.h
+++ b/lib/setup.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -172,6 +172,14 @@
 #  define CURL_DISABLE_RTSP
 #endif
 
+/*
+ * When http is disabled rtsp is not supported.
+ */
+
+#ifdef CURL_DISABLE_HTTP
+#  define CURL_DISABLE_RTSP
+#endif
+
 /* ================================================================ */
 /* No system header file shall be included in this file before this */
 /* point. The only allowed ones are those included from curlbuild.h */