diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index e7c8bcde9aa537f21ac683ed92a37a03e989950f..a5630992566726357a7fa801182983178ca354c1 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -185,7 +185,7 @@
 # - Hot Standby -
 
 #recovery_connections = on	# allows connections during recovery
-#max_standby_delay = 30		# max acceptable standby lag (s) to allow queries
+#max_standby_delay = 30s	# max acceptable standby lag (s) to allow queries
 				# to complete without conflict; -1 disables
 #vacuum_defer_cleanup_age = 0 # num transactions by which cleanup is deferred