diff --git a/hosts/hainich/services/sympa.nix b/hosts/hainich/services/sympa.nix
index 509f891..8192853 100644
--- a/hosts/hainich/services/sympa.nix
+++ b/hosts/hainich/services/sympa.nix
@@ -3,7 +3,7 @@
 {
   services.sympa = {
 	  enable = true;
-    mta = "none";
+    mta.type = "none";
 	  lang = "de";
 	  domains."lists.infra4future.de".webHost = "lists.infra4future.de";
 	  domains."lists.hacc.space".webHost = "lists.hacc.space";