diff --git a/tests/unit/cluster/slave-selection.tcl b/tests/unit/cluster/slave-selection.tcl
index 72dc4ef010..cbc237c6e9 100644
--- a/tests/unit/cluster/slave-selection.tcl
+++ b/tests/unit/cluster/slave-selection.tcl
@@ -3,7 +3,7 @@
 
 # Create a cluster with 5 master and 10 slaves, so that we have 2
 # slaves for each master.
-start_cluster 5 10 {tags {external:skip cluster}} {
+start_cluster 5 10 {tags {external:skip cluster} overrides {cluster-ping-interval 1000 cluster-node-timeout 5000}} {
 
 test "Cluster is up" {
     wait_for_cluster_state ok