diff --git a/org.jdrupes.vmoperator.vmconlet/resources/org/jdrupes/vmoperator/vmconlet/VmConlet-view.ftl.html b/org.jdrupes.vmoperator.vmconlet/resources/org/jdrupes/vmoperator/vmconlet/VmConlet-view.ftl.html
index 0e4bb26..913f45d 100644
--- a/org.jdrupes.vmoperator.vmconlet/resources/org/jdrupes/vmoperator/vmconlet/VmConlet-view.ftl.html
+++ b/org.jdrupes.vmoperator.vmconlet/resources/org/jdrupes/vmoperator/vmconlet/VmConlet-view.ftl.html
@@ -70,7 +70,7 @@
             <table class="table--basic table--basic--autoStriped">
               <tr>
                 <td>{{ localize("maximumCpus") }}</td>
-                <td>{{ entry.spec.vm.maximumCpus }}</td>
+                <td>{{ maximumCpus(entry) }}</td>
               </tr>
               <tr>
                 <td>{{ localize("requestedCpus") }}</td>
diff --git a/org.jdrupes.vmoperator.vmconlet/src/org/jdrupes/vmoperator/vmconlet/browser/VmConlet-functions.ts b/org.jdrupes.vmoperator.vmconlet/src/org/jdrupes/vmoperator/vmconlet/browser/VmConlet-functions.ts
index cf4740a..44d6471 100644
--- a/org.jdrupes.vmoperator.vmconlet/src/org/jdrupes/vmoperator/vmconlet/browser/VmConlet-functions.ts
+++ b/org.jdrupes.vmoperator.vmconlet/src/org/jdrupes/vmoperator/vmconlet/browser/VmConlet-functions.ts
@@ -147,9 +147,22 @@ window.orgJDrupesVmOperatorVmConlet.initView = (viewDom: HTMLElement,
 
             const cic = new ConditionlInputController(submitCallback);
 
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            const maximumCpus = (vmDef: any) => {
+                if (vmDef.spec.vm["maximumCpus"]) {
+                    return vmDef.spec.vm.maximumCpus;
+                }
+                const topo = vmDef.spec.vm.cpuTopology;
+                return Math.max(1, topo.coresPerDie)
+                    * Math.max(1, topo.diesPerSocket)
+                    * Math.max(1, topo.sockets)
+                    * Math.max(1, topo.threadsPerCore);
+            }
+
             return {
                 controller, vmInfos, filteredData, detailsByName, localize, 
                 shortDateTime, formatMemory, vmAction, cic, parseMemory,
+                maximumCpus,
                 scopedId: (id: string) => { return idScope.scopedId(id); }
             };
         }