diff --git a/src/backend/replication/logical/launcher.c b/src/backend/replication/logical/launcher.c
index b5240dcede..05a2055a33 100644
--- a/src/backend/replication/logical/launcher.c
+++ b/src/backend/replication/logical/launcher.c
@@ -477,6 +477,9 @@ ApplyLauncherRegister(void)
 	if (max_logical_replication_workers == 0)
 		return;
 
+	if (wal_level < WAL_LEVEL_LOGICAL)
+		return;
+
 	bgw.bgw_flags =	BGWORKER_SHMEM_ACCESS |
 		BGWORKER_BACKEND_DATABASE_CONNECTION;
 	bgw.bgw_start_time = BgWorkerStart_RecoveryFinished;
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 661b0fa9b6..ecf330406a 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -163,7 +163,7 @@
 #max_worker_processes = 8		# (change requires restart)
 #max_parallel_workers_per_gather = 2	# taken from max_worker_processes
 #max_parallel_workers = 8	    # total maximum number of worker_processes
-#max_logical_replication_workers = 4	# taken from max_worker_processes
+#max_logical_replication_workers = 0	# taken from max_worker_processes
 #old_snapshot_threshold = -1		# 1min-60d; -1 disables; 0 is immediate
 					# (change requires restart)
 #backend_flush_after = 0		# measured in pages, 0 disables