Index: /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsSystem.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsSystem.cpp	(revision 49911)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsSystem.cpp	(revision 49912)
@@ -661,5 +661,5 @@
     /* Load configuration: */
     CSystemProperties properties = vboxGlobal().virtualBox().GetSystemProperties();
-    uint hostCPUs = vboxGlobal().host().GetProcessorCount();
+    uint hostCPUs = vboxGlobal().host().GetProcessorOnlineCoreCount();
     m_uMinGuestCPU = properties.GetMinGuestCPUCount();
     m_uMaxGuestCPU = qMin(2 * hostCPUs, (uint)properties.GetMaxGuestCPUCount());