diff --git a/doc/examples/vsnfd.prf b/doc/examples/vsnfd.prf
index 061e06982..2884fe71e 100644
--- a/doc/examples/vsnfd.prf
+++ b/doc/examples/vsnfd.prf
@@ -1,26 +1,26 @@
 # vsnfd.prf - Configure options for the VS-NfD mode           -*- conf -*-
 #
 # The options for each tool are configured in a section ("[TOOL]");
 # see the respective man page for a description of these options and
 # the gpgconf manpage for a description of this file's syntax.
 
 [gpg]
 compliance de-vs
 default-new-key-algo rsa3072/cert,sign+rsa3072/encr
 
 [gpgsm]
 compliance de-vs
 enable-crl-checks
 
 [gpg-agent]
 enable-extended-key-format
 default-cache-ttl 900
-max-cache-ttl [] 3600
+max-cache-ttl 3600
 no-allow-mark-trusted
 no-allow-external-cache
 enforce-passphrase-constraints
 min-passphrase-len 9
 min-passphrase-nonalpha 0
 
 [dirmngr]
 allow-ocsp