diff --git a/README.md b/README.md
index facc08f98221149549a850939986f67cb9326749..44d2dbc983a4677607cd3573720e9e38b4a4d2d0 100644
--- a/README.md
+++ b/README.md
@@ -8,11 +8,11 @@ certificates. Uses ECDSA and P256 curves.
 
 To initialize a Certification Authority:
 
-    $ x509 init --ca-cert ca.pem --ca-key ca.key --subject O=MyCA
+    $ x509ca init --ca-cert ca.pem --ca-key ca.key --subject O=MyCA
 
 To sign a new certificate:
 
-    $ x509 sign --ca-cert ca.pem --ca-key ca.key \
+    $ x509ca sign --ca-cert ca.pem --ca-key ca.key \
         --cert cert.pem --key key.pem --subject CN=myserver --server
 
 Various options are available to customize the resulting certificate,