diff --git a/compose.mailman.yml b/compose.mailman.yml
index 5760679..d39478c 100644
--- a/compose.mailman.yml
+++ b/compose.mailman.yml
@@ -32,4 +32,4 @@ volumes:
 configs:
   postfix_override:
     name: ${STACK_NAME}_postfix_overrides_${POSTFIX_OVERRIDE_VERSION}
-    file: postfix.mailman.cf
+    file: postfix.cf