diff --git a/lib/krb5/krb5.conf.5 b/lib/krb5/krb5.conf.5
index 073e9e7f4..042437ee4 100644
--- a/lib/krb5/krb5.conf.5
+++ b/lib/krb5/krb5.conf.5
@@ -164,9 +164,10 @@ This is deprecated, see the
 section below.
 .It Li default_cc_name = Va ccname
 the default credentials cache name.
-Only useful for forcing the library to default to CCAPI, this is since
-not possible to express user/global information in the string, like
-user uid, time, etc
+The string can contain variables that are expanded on runtime.
+Only support variable now is
+.Li ${uid}
+that expands to the current user id.
 .It Li default_etypes = Va etypes ...
 A list of default encryption types to use.
 .It Li default_etypes_des = Va etypes ...