diff --git a/src/test/modules/test_slot_timelines/expected/load_extension_1.out b/src/test/modules/test_slot_timelines/expected/load_extension_1.out
new file mode 100644
index 0000000000..bf2abefb6e
--- /dev/null
+++ b/src/test/modules/test_slot_timelines/expected/load_extension_1.out
@@ -0,0 +1,7 @@
+CREATE EXTENSION test_slot_timelines;
+SELECT test_slot_timelines_create_logical_slot('test_slot', 'test_decoding');
+ERROR:  replication slots can only be used if max_replication_slots > 0
+SELECT test_slot_timelines_advance_logical_slot('test_slot', txid_current(), txid_current(), pg_current_xlog_location(), pg_current_xlog_location());
+ERROR:  replication slots can only be used if max_replication_slots > 0
+SELECT pg_drop_replication_slot('test_slot');
+ERROR:  replication slots can only be used if max_replication_slots > 0