diff --git a/postfix/files/main.cf b/postfix/files/main.cf
index 6db10a9..4d686bc 100644
--- a/postfix/files/main.cf
+++ b/postfix/files/main.cf
@@ -7,8 +7,7 @@
   {%- if value is number or value is string -%}
 {{ parameter }} = {{ value }}
   {%- elif value is iterable -%}
-{{ parameter }} =
-       {{ value | join(', ')}}
+{{ parameter }} = {{ value | join(', ')}}
   {%- endif -%}
 {%- do processed_parameters.append(parameter) %}
 {%- endif %}