diff --git a/services/static-webserver/client/source/class/osparc/MaintenanceTracker.js b/services/static-webserver/client/source/class/osparc/MaintenanceTracker.js
index 177f5789d28..64a14dd4a0e 100644
--- a/services/static-webserver/client/source/class/osparc/MaintenanceTracker.js
+++ b/services/static-webserver/client/source/class/osparc/MaintenanceTracker.js
@@ -95,6 +95,12 @@ qx.Class.define("osparc.MaintenanceTracker", {
     },
 
     __setMaintenance: function(maintenanceData) {
+      // ignore old maintenance
+      if (new Date(maintenanceData.end).getTime() < new Date().getTime()) {
+        console.warn(`Old maintenance "${maintenanceData.reason}" wasn't removed"`);
+        return;
+      }
+
       const oldStart = this.getStart();
       const oldEnd = this.getEnd();
       const oldReason = this.getReason();