diff --git a/roles/palava-signaltower/defaults/main.yml b/roles/palava-signaltower/defaults/main.yml
index 2986b29..e7df63f 100644
--- a/roles/palava-signaltower/defaults/main.yml
+++ b/roles/palava-signaltower/defaults/main.yml
@@ -5,6 +5,8 @@ palava_signaltower_log_dir: /var/log/signaltower
 palava_signaltower_port: 4233
 palava_signaltower_autostart: yes
 
+# palava_signaltower_turn_secret: TURN_SECRET__IF_GIVEN_TURN_IS_ENABLED
+
 palava_signaltower_version: master
 
 palava_environment: production
diff --git a/roles/palava-signaltower/templates/signaltower.service.j2 b/roles/palava-signaltower/templates/signaltower.service.j2
index 4520c78..20eeb35 100644
--- a/roles/palava-signaltower/templates/signaltower.service.j2
+++ b/roles/palava-signaltower/templates/signaltower.service.j2
@@ -13,8 +13,11 @@ Restart=on-failure
 Type=forking
 RestartSec=5
 Environment=SIGNALTOWER_PORT={{ palava_signaltower_port }}
+{% if palava_signaltower_turn_secret|default(False) %}
+Environment=SIGNALTOWER_TURN_SECRET={{ palava_signaltower_turn_secret }}
+{% endif %}
 Environment=LOG_FILE={{ palava_signaltower_log_dir }}/signaltower.log
 SyslogIdentifier=signaltower
 
 [Install]
-WantedBy=multi-user.target
\ No newline at end of file
+WantedBy=multi-user.target