diff --git a/roles/mail_forwarder/tasks/main.yml b/roles/mail_forwarder/tasks/main.yml
index d5384e75bb7ae7dd20be804f1bf36a29ac02ed54..9a3be1d672cd1dce33edc01eb629780cb1a872a4 100644
--- a/roles/mail_forwarder/tasks/main.yml
+++ b/roles/mail_forwarder/tasks/main.yml
@@ -7,8 +7,12 @@
   apt: name="exim4*" state=absent purge=yes
 
 - name: Deploy the SMTP relay TLS truststore
-  copy: content="{{ smtp_relay_truststore }}" dest="/etc/ssl/certs/smtp_relay_truststore.pem"
-        owner=root group=root mode=0644
+  copy:
+    content: "{{ smtp_relay_truststore }}"
+    dest: "/etc/ssl/certs/smtp_relay_truststore.pem"
+    owner: root
+    group: root
+    mode: 0644
 
 - name: Configure visible mail name of the system
   copy: content="{{ inventory_hostname }}\n" dest="/etc/mailname"