diff --git a/hm-modules/wallpapers.nix b/hm-modules/wallpapers.nix
index f5a57c7..bec505d 100644
--- a/hm-modules/wallpapers.nix
+++ b/hm-modules/wallpapers.nix
@@ -3,9 +3,24 @@
   config,
   pkgs,
   ...
-}: {
+}: let
+  cfg = config.xsession.wallpapers;
+in {
   options.xsession.wallpapers = {
     enable = lib.mkEnableOption "automatically refreshing randomly selected wallpapers";
+    script = let
+      exe =
+        pkgs.writeShellScript "set-wallpaper"
+        ''
+             ${pkgs.feh}/bin/feh --no-fehbg --bg-fill --randomize \
+          $( ${pkgs.findutils}/bin/find ${config.home.homeDirectory}/${cfg.folder} \( -iname "*.png" -or -iname "*.jpg" \) )
+        '';
+    in
+      lib.mkOption {
+        description = "The script which will be called to set new wallpapers";
+        default = exe;
+        type = lib.types.package;
+      };
     folder = lib.mkOption {
       description = "The folder from which the wallpapers are selected. Relative to home directory";
       type = lib.types.str;
@@ -17,44 +32,35 @@
       default = "3 min";
     };
   };
-  config = let
-    cfg = config.xsession.wallpapers;
-    exe =
-      pkgs.writeShellScript "set-wallpaper"
-      ''
-           ${pkgs.feh}/bin/feh --no-fehbg --bg-fill --randomize \
-        $( ${pkgs.findutils}/bin/find ${config.home.homeDirectory}/${cfg.folder} \( -iname "*.png" -or -iname "*.jpg" \) )
-      '';
-  in
-    lib.mkIf cfg.enable {
-      systemd.user = {
-        timers = {
-          set-wallpaper = {
-            Unit = {
-              Description = "Set a random wallpaper every 3 minutes";
-            };
-            Timer = {
-              OnUnitActiveSec = cfg.refreshInterval;
-            };
-            Install.WantedBy = [
-              "timers.target"
-            ];
+  config = lib.mkIf cfg.enable {
+    systemd.user = {
+      timers = {
+        set-wallpaper = {
+          Unit = {
+            Description = "Set a random wallpaper every 3 minutes";
           };
-        };
-        services = {
-          set-wallpaper = {
-            Unit = {
-              Description = "Set a random wallpaper on all X displays";
-            };
-            Service = {
-              Type = "oneshot";
-              ExecStart =
-                exe;
-            };
-            Install.WantedBy = ["graphical-session.target"];
+          Timer = {
+            OnUnitActiveSec = cfg.refreshInterval;
           };
+          Install.WantedBy = [
+            "timers.target"
+          ];
+        };
+      };
+      services = {
+        set-wallpaper = {
+          Unit = {
+            Description = "Set a random wallpaper on all X displays";
+          };
+          Service = {
+            Type = "oneshot";
+            ExecStart =
+              cfg.script;
+          };
+          Install.WantedBy = ["graphical-session.target"];
         };
       };
-      home.persistence."/state".directories = [cfg.folder];
     };
+    home.persistence."/state".directories = [cfg.folder];
+  };
 }