diff --git a/README.md b/README.md
index 137fbb2..665aa57 100644
--- a/README.md
+++ b/README.md
@@ -114,7 +114,7 @@ Depending on your security requirements and secrets management, this process is
 
 ```nix
 {
-  services.crowdsec = {
+  systemd.services.crowdsec.serviceConfig = {
     ExecStartPre = let
       script = pkgs.writeScriptBin "register-bouncer" ''
         #!${pkgs.runtimeShell}