diff --git a/nixosModules/services/fava/service.nix b/nixosModules/services/fava/service.nix
index 12ea6c2..f43930f 100644
--- a/nixosModules/services/fava/service.nix
+++ b/nixosModules/services/fava/service.nix
@@ -3,9 +3,12 @@
 {
   options.fava = {
     enable = lib.mkEnableOption "Enables fava double entry accounting";
-    ledgerFile = lib.mkOption { default = "/var/lib/fava/ledger.beancount"; };
+    ledgerFiles = lib.mkOption { 
+      default = ["/var/lib/fava/ledger.beancount"];
+    };
     port = lib.mkOption { default = "5000"; };
     host = lib.mkOption { default = "localhost"; };
+    favaHome = lib.mkOption { default = "/var/lib/fava"; };
   };
 
   config = lib.mkIf config.fava.enable {
@@ -15,7 +18,13 @@
       wants = [ "network-online.target" ];
       wantedBy = [ "multi-user.target" ];
       serviceConfig = {
-        ExecStart = "${pkgs.fava}/bin/fava --port ${config.fava.port} --host ${config.fava.host} ${config.fava.ledgerFile}";
+        ExecStart = with config.fava; let
+          command = lib.concatStringsSep " " ([
+            "${pkgs.fava}/bin/fava"
+            "--port ${port}"
+            "--host ${host}"
+          ] ++ ["--"] ++ ledgerFiles);
+        in command;
         Type = "simple";
         User = "fava";
         Group = "fava";
@@ -26,12 +35,12 @@
         PrivateDevices = true;
         ProtectHome = true;
         ProtectSystem = "full";
-        ReadWriteDirectories = "/var/lib/fava";
+        ReadWriteDirectories = config.fava.favaHome;
       };
     };
 
     users.users.fava = {
-      home = "/var/lib/fava";
+      home = config.fava.favaHome;
       createHome = true;
       isSystemUser = true;
       group = "fava";