diff --git a/static/hub.js b/static/hub.js
index 55bcde9..0e1642e 100644
--- a/static/hub.js
+++ b/static/hub.js
@@ -452,6 +452,14 @@
         "</tr>"
       );
     }
+    const rows = [];
+    if (s.sim.machines > 0) rows.push(modeRow("sim", "sim", s.sim));
+    if (s.live.machines > 0) rows.push(modeRow("live", "live", s.live));
+    if (!rows.length) {
+      box.hidden = true;
+      box.innerHTML = "";
+      return;
+    }
     box.hidden = false;
     box.innerHTML =
       '<div class="overview-mode-wrap">' +
@@ -460,8 +468,7 @@
       "<thead><tr>" +
       "<th>模式</th><th>在线</th><th>离线</th><th>仓位</th><th>浮盈</th><th>权利金</th><th>余额</th>" +
       "</tr></thead><tbody>" +
-      modeRow("sim", "sim", s.sim) +
-      modeRow("live", "live", s.live) +
+      rows.join("") +
       "</tbody></table></div>";
   }
 
diff --git a/templates/dashboard.html b/templates/dashboard.html
index f1e1c2c..d9bb543 100644
--- a/templates/dashboard.html
+++ b/templates/dashboard.html
@@ -15,6 +15,6 @@
 <div id="overview-grid"></div>
 {% endblock %}
 {% block scripts %}
-<script src="{{ url_for('static', filename='hub.js') }}?v=17"></script>
+<script src="{{ url_for('static', filename='hub.js') }}?v=18"></script>
 <script>HubOverview.boot();</script>
 {% endblock %}