diff --git a/src/test/recovery/t/004_timeline_switch.pl b/src/test/recovery/t/004_timeline_switch.pl
index edadab790f..91a63f4e58 100644
--- a/src/test/recovery/t/004_timeline_switch.pl
+++ b/src/test/recovery/t/004_timeline_switch.pl
@@ -75,6 +75,10 @@ is($result, qq(2000), 'check content of standby 2');
 # Initialize master node
 my $node_master_2 = get_new_node('master_2');
 $node_master_2->init(allows_streaming => 1, has_archiving => 1);
+$node_master_2->append_conf(
+	'postgresql.conf', qq(
+wal_keep_size = 512MB
+));
 $node_master_2->start;
 
 # Take backup