diff --git a/src/backend/libpq/pg_hba.conf.sample b/src/backend/libpq/pg_hba.conf.sample
index 4ff29977c62..1116debbc1a 100644
--- a/src/backend/libpq/pg_hba.conf.sample
+++ b/src/backend/libpq/pg_hba.conf.sample
@@ -46,4 +46,4 @@
 
 local   all         all                                                                trust
 host    all         all         127.0.0.1         255.255.255.255                      trust
-host    all         all         ::1               ffff:ffff:ffff:fff:ffff:ffff:ffff    trust
+host    all         all         ::1               ffff:ffff:ffff:ffff:ffff:ffff        trust