diff --git a/init/systemd/justcaptcha.service b/init/systemd/justcaptcha.service
index 1a92d45..d7e6f64 100755
--- a/init/systemd/justcaptcha.service
+++ b/init/systemd/justcaptcha.service
@@ -6,7 +6,7 @@ After=network.target
 Type=simple
 Restart=on-failure
 DynamicUser=yes
-ExecStart=/usr/bin/justcaptchad -expire 5m -listen '/var/run/justcaptcha/j.sock'
+ExecStart=/usr/bin/justcaptchad -expiry 5m -listen '/var/run/justcaptcha/j.sock'
 
 ReadOnlyPaths=/
 # Set here path to directory where uploads are stored.