diff --git a/operator/redisfailover/service/client.go b/operator/redisfailover/service/client.go
index ed6567bda..d5c9b545c 100644
--- a/operator/redisfailover/service/client.go
+++ b/operator/redisfailover/service/client.go
@@ -147,7 +147,7 @@ func (r *RedisFailoverKubeClient) ensurePodDisruptionBudget(rf *redisfailoverv1.
 
 	minAvailable := intstr.FromInt(2)
 	if rf.Spec.Redis.Replicas <= 2 {
-		minAvailable = intstr.FromInt(int(rf.Spec.Redis.Replicas - 1))
+		minAvailable = intstr.FromInt(1)
 	}
 
 	labels = util.MergeLabels(labels, generateSelectorLabels(component, rf.Name))