diff --git a/main/http.c b/main/http.c
index 674ae36eae8515fbce09227b5900e1cc743ec609..8aa50830a8dbb7f42c5bae92168e4c388dc20ee3 100644
--- a/main/http.c
+++ b/main/http.c
@@ -25,6 +25,8 @@
  * This program implements a tiny http server
  * and was inspired by micro-httpd by Jef Poskanzer
  *
+ * \extref GMime http://spruce.sourceforge.net/gmime/
+ *
  * \ref AstHTTP - AMI over the http protocol
  */