diff --git a/roles/base/tasks/postfix.yml b/roles/base/tasks/postfix.yml
index cd1337139a..1a90c5527c 100644
--- a/roles/base/tasks/postfix.yml
+++ b/roles/base/tasks/postfix.yml
@@ -43,7 +43,7 @@
 - name: work around s390 privatedevices bug
   ini_file:
     path: /usr/lib/systemd/system/postfix.service
-    section: service
+    section: Service
     option: PrivateDevices
     value: false
   notify: