diff --git a/flake.nix b/flake.nix
index fce38f9..943b3de 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,13 +7,10 @@
 
       imports = [
         ./hosts
+        ./modules
       ];
 
-      perSystem = {
-        config,
-        pkgs,
-        ...
-      }: {
+      perSystem = {pkgs, ...}: {
         devShells.default = pkgs.mkShell {
           packages = [
             pkgs.alejandra
diff --git a/modules/default.nix b/modules/default.nix
new file mode 100644
index 0000000..47af602
--- /dev/null
+++ b/modules/default.nix
@@ -0,0 +1,5 @@
+{
+  flake.nixosModules = {
+    theme = import ./theme;
+  };
+}
diff --git a/modules/theme/default.nix b/modules/theme/default.nix
new file mode 100644
index 0000000..6355a8b
--- /dev/null
+++ b/modules/theme/default.nix
@@ -0,0 +1,15 @@
+{
+  lib,
+  config,
+  ...
+}: {
+  options.theme = {
+    wallpaper = lib.mkOption {
+      description = ''
+        Location of the wallpaper that will be used throughout the system.
+      '';
+      type = lib.types.path;
+      example = lib.literalExpression "./wallpaper.png";
+    };
+  };
+}