diff --git a/doc/Readme.conference b/doc/Readme.conference
index 237ccce1..3148e0e6 100644
--- a/doc/Readme.conference
+++ b/doc/Readme.conference
@@ -25,7 +25,7 @@ keys:
  - press '*' to connect the callee to the conference.
  - press '#' to drop the call.
 
-
+Dialout is only enabled if dialout_suffix is defined (see below).
 Configuration:
 --------------
 
@@ -40,4 +40,4 @@ drop_sound: sound to be played to all the participants
             when a participant leaves the conference. (optional)
 
 dialout_suffix: suffix to be append to the numbered entered by
-                the user. Example: @iptel.org
\ No newline at end of file
+                the user. Example: @iptel.org