diff --git a/flake.nix b/flake.nix
index 17198a6..003f181 100644
--- a/flake.nix
+++ b/flake.nix
@@ -62,7 +62,7 @@
       # Systemd Service
       config = lib.mkIf cfg.enable {
         environment.etc."sTodo" = {
-                source = "$src/static";
+                source = "${src}/static";
           };
         systemd.services.sTodo = {
           description = "Launch a sTodo app to have a online todolist";