1 files changed, 2 insertions, 2 deletions

diff --git a/README.md b/README.md
index dce5a7e..8605fa4 100644
--- a/README.md
+++ b/README.md
@@ -44,8 +44,8 @@ By default the public and private keys are loaded via the `RECAPTCHA_PUBLIC_KEY`
 
 ```elixir
   config :recaptcha,
-    public_key: System.get_env("RECAPTCHA_PUBLIC_KEY"),
-    secret: System.get_env("RECAPTCHA_PRIVATE_KEY")
+    public_key: {:system, "RECAPTCHA_PUBLIC_KEY"},
+    secret: {:system, "RECAPTCHA_PRIVATE_KEY"}
 ```
 
 ## Usage