diff --git a/config/wo.conf b/config/wo.conf
index b1e6b3c..8d4a3ad 100644
--- a/config/wo.conf
+++ b/config/wo.conf
@@ -70,7 +70,7 @@ email =
 
 [letsencrypt]
 
-key-length = "ec-384"
+keylength = "ec-384"
 
 [update]