diff --git a/nixos/modules/services/mail/roundcube.nix b/nixos/modules/services/mail/roundcube.nix
index 7cb723e3172c..c31c4b069928 100644
--- a/nixos/modules/services/mail/roundcube.nix
+++ b/nixos/modules/services/mail/roundcube.nix
@@ -272,7 +272,7 @@ in
     ];
 
     systemd.services.roundcube-setup = lib.mkMerge [
-      (lib.mkIf (cfg.database.host == "localhost") {
+      (lib.mkIf localDB {
         requires = [ "postgresql.service" ];
         after = [ "postgresql.service" ];
       })
@@ -281,7 +281,9 @@ in
         after = [ "network-online.target" ];
         wantedBy = [ "multi-user.target" ];
 
-        path = [ config.services.postgresql.package ];
+        path = [
+          (if localDB then config.services.postgresql.package else pkgs.postgresql)
+        ];
         script =
           let
             psql = "${lib.optionalString (!localDB) "PGPASSFILE=${cfg.database.passwordFile}"} psql ${