diff --git a/nixos/modules/services/home-automation/evcc.nix b/nixos/modules/services/home-automation/evcc.nix
index 9708a3ce16f1..e6bde74d5f26 100644
--- a/nixos/modules/services/home-automation/evcc.nix
+++ b/nixos/modules/services/home-automation/evcc.nix
@@ -41,7 +41,7 @@ in
     environmentFile = mkOption {
       type = nullOr path;
       default = null;
-      example = /run/keys/evcc;
+      example = "/run/keys/evcc";
       description = ''
         File with environment variables to pass into the runtime environment.