diff --git a/resources/templates/provision/yealink/t52s/{$mac}.cfg b/resources/templates/provision/yealink/t52s/{$mac}.cfg
index efdacf4c00..8a52b18e34 100644
--- a/resources/templates/provision/yealink/t52s/{$mac}.cfg
+++ b/resources/templates/provision/yealink/t52s/{$mac}.cfg
@@ -335,7 +335,7 @@ account.1.nat.udp_update_enable= 3
 account.1.nat.udp_update_time= 30
 account.1.nat.rport= {$yealink_rport}
 
-account.1.dtmf.type=
+account.1.dtmf.type= {$yealink_dtmf_type}
 account.1.dtmf.info_type=
 account.1.dtmf.dtmf_payload=
 account.1.100rel_enable= {$yealink_retransmission}
@@ -361,7 +361,7 @@ account.2.nat.udp_update_enable= 3
 account.2.nat.udp_update_time= 30
 account.2.nat.rport= {$yealink_rport}
 
-account.2.dtmf.type=
+account.2.dtmf.type= {$yealink_dtmf_type}
 account.2.dtmf.info_type=
 account.2.dtmf.dtmf_payload=
 account.2.100rel_enable= {$yealink_retransmission}