diff --git a/tests/cluster/tests/includes/init-tests.tcl b/tests/cluster/tests/includes/init-tests.tcl
index 9f34be181b866affc32ad2583309332cf1ba16f3..75417f20c75f1ae8b815e3f551c24e8bb9b1eb34 100644
--- a/tests/cluster/tests/includes/init-tests.tcl
+++ b/tests/cluster/tests/includes/init-tests.tcl
@@ -21,7 +21,7 @@ test "Cluster nodes are reachable" {
 
 test "Cluster nodes hard reset" {
     foreach_redis_id id {
-        R $id flushall
+        catch {R $id flushall} ; # May fail for readonly slaves.
         R $id cluster reset hard
         R $id config set cluster-node-timeout 3000
     }