diff --git a/debian/control-modules b/debian/control-modules
index 679082187c..61f0b33a80 100644
--- a/debian/control-modules
+++ b/debian/control-modules
@@ -229,7 +229,7 @@ Description: Voicemail detection
 Module: applications/mod_voicemail
 Description: Voicemail
  This module provides a voicemail system.
-Depends: mail-transport-agent
+Depends: ssmtp | mail-transport-agent
 
 Module: applications/mod_voicemail_ivr
 Description: Voicemail IVR