diff --git a/nixos/modules/services/mail/postfix.nix b/nixos/modules/services/mail/postfix.nix
index 845c6acc7fe..47ce2c4c5e3 100644
--- a/nixos/modules/services/mail/postfix.nix
+++ b/nixos/modules/services/mail/postfix.nix
@@ -76,7 +76,7 @@ let
   // optionalAttrs (cfg.relayDomains != null) { relay_domains = cfg.relayDomains; }
   // optionalAttrs (cfg.recipientDelimiter != "") { recipient_delimiter = cfg.recipientDelimiter; }
   // optionalAttrs haveAliases { alias_maps = "${cfg.aliasMapType}:/etc/postfix/aliases"; }
-  // optionalAttrs haveTransport { transport_maps = "hash:/etc/postfx/transport"; }
+  // optionalAttrs haveTransport { transport_maps = "hash:/etc/postfix/transport"; }
   // optionalAttrs haveVirtual { virtual_alias_maps = "${cfg.virtualMapType}:/etc/postfix/virtual"; }
   // optionalAttrs (cfg.dnsBlacklists != []) { smtpd_client_restrictions = clientRestrictions; }
   // optionalAttrs cfg.enableHeaderChecks { header_checks = "regexp:/etc/postfix/header_checks"; }