diff --git a/src/cluster.c b/src/cluster.c
index a390585f3..9e4cfd273 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -998,6 +998,8 @@ void clusterInit(void) {
     memset(server.cluster->slots,0, sizeof(server.cluster->slots));
     clusterCloseAllSlots();
 
+    memset(server.cluster->owner_not_claiming_slot, 0, sizeof(server.cluster->owner_not_claiming_slot));
+
     /* Lock the cluster config file to make sure every node uses
      * its own nodes.conf. */
     server.cluster_config_file_lock_fd = -1;