diff --git a/roles/rsyslog/tasks/main.yml b/roles/rsyslog/tasks/main.yml
index 2b696e5e..233ba323 100644
--- a/roles/rsyslog/tasks/main.yml
+++ b/roles/rsyslog/tasks/main.yml
@@ -130,7 +130,7 @@
             sections:
               - options: |-
                   # Mark message periodically by immark, if set to true.
-                  module(load="immark" interval={{ logging_mark_interval }})
+                  module(load="immark" interval="{{ logging_mark_interval }}")
           - name: 'common-defaults'
             type: 'global'
             sections: