diff --git a/doc/examples/vsnfd.prf b/doc/examples/vsnfd.prf
index 0c0ddd81e..7224e7566 100644
--- a/doc/examples/vsnfd.prf
+++ b/doc/examples/vsnfd.prf
@@ -12,7 +12,6 @@ compliance de-vs
 enable-crl-checks
 
 [gpg-agent]
-enable-extended-key-format
 default-cache-ttl 900
 max-cache-ttl 3600
 no-allow-mark-trusted