diff --git a/src/test/recovery/t/035_standby_logical_decoding.pl b/src/test/recovery/t/035_standby_logical_decoding.pl
index ba98a18bd2..94a8384c31 100644
--- a/src/test/recovery/t/035_standby_logical_decoding.pl
+++ b/src/test/recovery/t/035_standby_logical_decoding.pl
@@ -653,9 +653,15 @@ $node_standby->reload;
 $node_primary->psql('postgres', q[CREATE DATABASE testdb]);
 $node_primary->safe_psql('testdb', qq[CREATE TABLE decoding_test(x integer, y text);]);
 
+# Wait for the standby to catchup before creating the slots
+$node_primary->wait_for_replay_catchup($node_standby);
+
 # create the logical slots
 create_logical_slots($node_standby, 'promotion_');
 
+# Wait for the cascading standby to catchup before creating the slots
+$node_standby->wait_for_replay_catchup($node_cascading_standby, $node_primary);
+
 # create the logical slots on the cascading standby too
 create_logical_slots($node_cascading_standby, 'promotion_');