diff --git a/res/raw/linphonerc_default b/res/raw/linphonerc_default
index 3858ad0de..e86e99326 100644
--- a/res/raw/linphonerc_default
+++ b/res/raw/linphonerc_default
@@ -6,6 +6,7 @@ keepalive_period=30000
 sip_port=-1
 sip_tcp_port=-1
 sip_tls_port=-1
+media_encryption=zrtp
 
 [video]
 size=vga