diff --git a/postfix.nix b/postfix.nix
index 31bf494..f318c36 100644
--- a/postfix.nix
+++ b/postfix.nix
@@ -328,7 +328,7 @@ in {
         virtual = let
           mkEmail = domain: user: "${user}@${domain}";
           mkUserAliases = concatMapAttrsToList (user: aliases:
-            map (alias: "${alias}  ${mkEmail cfg.domain user}"));
+            map (alias: "${alias}  ${mkEmail cfg.domain user}") aliases);
           mkAliasUsers = domains:
             let
               userList = users: