diff --git a/gns3server/config_samples/gns3_server.conf b/gns3server/config_samples/gns3_server.conf
index fe15c335..4cff6a51 100644
--- a/gns3server/config_samples/gns3_server.conf
+++ b/gns3server/config_samples/gns3_server.conf
@@ -102,6 +102,9 @@ default_nat_interface = vmnet10
 ; Enable the built-in templates
 enable_builtin_templates = True
 
+; check if hardware virtualization is used by other emulators (KVM, VMware or VirtualBox)
+hardware_virtualization_check = True
+
 [VPCS]
 ; VPCS executable location, default: search in PATH
 ;vpcs_path = vpcs