diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 47c81e4db1..997af5bf07 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -735,9 +735,6 @@ PostmasterMain(int argc, char *argv[])
 	if (max_wal_senders > 0 && wal_level == WAL_LEVEL_MINIMAL)
 		ereport(ERROR,
 				(errmsg("WAL streaming (max_wal_senders > 0) requires wal_level \"archive\" or \"hot_standby\"")));
-	if (strlen(SyncRepStandbyNames) > 0 && max_wal_senders == 0)
-		ereport(ERROR,
-				(errmsg("synchronous replication requires WAL streaming (max_wal_senders > 0)")));
 
 	/*
 	 * Other one-time internal sanity checks can go here, if they are fast.