diff --git a/src/cli.rs b/src/cli.rs
index 405f3bc..52bab07 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -75,7 +75,7 @@ pub struct Credentials {
 #[derive(Debug, StructOpt)]
 pub struct AuthenticatorParameters {
     /// Request a PIN to unlock the authenticator
-    #[structopt(short = "P", long = "pin", env = "FIDO2LUKS_PIN")]
+    #[structopt(short = "P", long = "pin")]
     pub pin: bool,
 
     /// Location to read PIN from