diff --git a/include/maxscale/server.h b/include/maxscale/server.h
index 33243be10..426332a15 100644
--- a/include/maxscale/server.h
+++ b/include/maxscale/server.h
@@ -148,7 +148,6 @@ typedef struct server
     unsigned long  node_ts;        /**< Last timestamp set from M/S monitor module */
     long           master_id;      /**< Master server id of this node */
     int            depth;          /**< Replication level in the tree */
-    long           slaves[MAX_NUM_SLAVES]; /**< Slaves of this node */
     // Misc fields
     char           *auth_options;  /**< Authenticator options, not used. TODO: Remove. */
     bool           master_err_is_logged; /**< If node failed, this indicates whether it is logged. Only used
diff --git a/server/core/server.cc b/server/core/server.cc
index 1863bb06f..7074c2928 100644
--- a/server/core/server.cc
+++ b/server/core/server.cc
@@ -516,24 +516,6 @@ dprintServer(DCB *dcb, const SERVER *server)
                mon_get_event_name((mxs_monitor_event_t)server->last_event));
     time_t t = maxscale_started() + MXS_CLOCK_TO_SEC(server->triggered_at);
     dcb_printf(dcb, "\tTriggered at:                        %s\n", http_to_date(t).c_str());
-
-    if (server->slaves)
-    {
-        int i;
-        dcb_printf(dcb, "\tSlave Ids:                           ");
-        for (i = 0; server->slaves[i]; i++)
-        {
-            if (i == 0)
-            {
-                dcb_printf(dcb, "%li", server->slaves[i]);
-            }
-            else
-            {
-                dcb_printf(dcb, ", %li ", server->slaves[i]);
-            }
-        }
-        dcb_printf(dcb, "\n");
-    }
     dcb_printf(dcb, "\tRepl Depth:                          %d\n", server->depth);
     if (SERVER_IS_SLAVE(server) || SERVER_IS_RELAY_SERVER(server))
     {
@@ -1468,18 +1450,6 @@ static json_t* server_json_attributes(const SERVER* server)
     json_object_set_new(attr, "last_event", json_string(event_name));
     json_object_set_new(attr, "triggered_at", json_string(http_to_date(t).c_str()));
 
-    if (server->slaves)
-    {
-        json_t* slaves = json_array();
-
-        for (int i = 0; server->slaves[i]; i++)
-        {
-            json_array_append_new(slaves, json_integer(server->slaves[i]));
-        }
-
-        json_object_set_new(attr, "slaves", slaves);
-    }
-
     if (server->rlag >= 0)
     {
         json_object_set_new(attr, "replication_lag", json_integer(server->rlag));
diff --git a/server/modules/monitor/mariadbmon/cluster_discovery.cc b/server/modules/monitor/mariadbmon/cluster_discovery.cc
index d4513f585..19dc26425 100644
--- a/server/modules/monitor/mariadbmon/cluster_discovery.cc
+++ b/server/modules/monitor/mariadbmon/cluster_discovery.cc
@@ -16,7 +16,6 @@
 #include <maxscale/modutil.h>
 #include <maxscale/mysql_utils.h>
 
-static int add_slave_to_master(long *slaves_list, int list_size, long node_id);
 static bool check_replicate_ignore_table(MXS_MONITORED_SERVER* database);
 static bool check_replicate_do_table(MXS_MONITORED_SERVER* database);
 static bool check_replicate_wild_do_table(MXS_MONITORED_SERVER* database);
@@ -118,8 +117,6 @@ MXS_MONITORED_SERVER* MariaDBMonitor::get_replication_tree()
                 master_cand = getServerByNodeId(current->master_id);
                 if (master_cand && master_cand->server && master_cand->server->node_id > 0)
                 {
-                    add_slave_to_master(master_cand->server->slaves, sizeof(master_cand->server->slaves),
-                                        current->node_id);
                     master_cand->server->depth = current->depth - 1;
 
                     if (m_master && master_cand->server->depth < m_master->m_server_base->server->depth)
@@ -177,28 +174,6 @@ MXS_MONITORED_SERVER* MariaDBMonitor::get_replication_tree()
     }
 }
 
-/*******
- * This function add a slave id into the slaves server field
- * of its master server
- *
- * @param slaves_list   The slave list array of the master server
- * @param list_size     The size of the slave list
- * @param node_id       The node_id of the slave to be inserted
- * @return      1 for inserted value and 0 otherwise
- */
-static int add_slave_to_master(long *slaves_list, int list_size, long node_id)
-{
-    for (int i = 0; i < list_size; i++)
-    {
-        if (slaves_list[i] == 0)
-        {
-            slaves_list[i] = node_id;
-            return 1;
-        }
-    }
-    return 0;
-}
-
 /**
  * Fetch a node by node_id
  *
@@ -903,9 +878,6 @@ void MariaDBMonitor::monitor_one_server(MariaDBServer& server)
     /* monitor current node */
     monitor_database(get_server_info(ptr));
 
-    /* reset the slave list of current node */
-    memset(&ptr->server->slaves, 0, sizeof(ptr->server->slaves));
-
     if (mon_status_changed(ptr))
     {
         if (SRV_MASTER_STATUS(ptr->mon_prev_status))