diff --git a/gns3server/compute/virtualbox/virtualbox_vm.py b/gns3server/compute/virtualbox/virtualbox_vm.py
index c26d9637..eb83f020 100644
--- a/gns3server/compute/virtualbox/virtualbox_vm.py
+++ b/gns3server/compute/virtualbox/virtualbox_vm.py
@@ -86,7 +86,8 @@ class VirtualBoxVM(BaseNode):
                 "adapter_type": self.adapter_type,
                 "ram": self.ram,
                 "status": self.status,
-                "use_any_adapter": self.use_any_adapter}
+                "use_any_adapter": self.use_any_adapter,
+                "linked_clone": self._linked_clone}
         if self._linked_clone:
             json["node_directory"] = self.working_dir
         else:
diff --git a/gns3server/handlers/api/compute/virtualbox_handler.py b/gns3server/handlers/api/compute/virtualbox_handler.py
index 26a041a2..7ff865f5 100644
--- a/gns3server/handlers/api/compute/virtualbox_handler.py
+++ b/gns3server/handlers/api/compute/virtualbox_handler.py
@@ -26,7 +26,6 @@ from gns3server.compute.project_manager import ProjectManager
 
 from gns3server.schemas.virtualbox import (
     VBOX_CREATE_SCHEMA,
-    VBOX_UPDATE_SCHEMA,
     VBOX_OBJECT_SCHEMA
 )
 
@@ -109,7 +108,7 @@ class VirtualBoxHandler:
             409: "Conflict"
         },
         description="Update a VirtualBox VM instance",
-        input=VBOX_UPDATE_SCHEMA,
+        input=VBOX_OBJECT_SCHEMA,
         output=VBOX_OBJECT_SCHEMA)
     def update(request, response):
 
diff --git a/gns3server/schemas/virtualbox.py b/gns3server/schemas/virtualbox.py
index 9ddcfe73..c55be950 100644
--- a/gns3server/schemas/virtualbox.py
+++ b/gns3server/schemas/virtualbox.py
@@ -89,64 +89,6 @@ VBOX_CREATE_SCHEMA = {
     "required": ["name", "vmname", "linked_clone"],
 }
 
-VBOX_UPDATE_SCHEMA = {
-    "$schema": "http://json-schema.org/draft-04/schema#",
-    "description": "Request validation to update a VirtualBox VM instance",
-    "type": "object",
-    "properties": {
-        "name": {
-            "description": "VirtualBox VM instance name",
-            "type": "string",
-            "minLength": 1,
-        },
-        "vmname": {
-            "description": "VirtualBox VM name (in VirtualBox itself)",
-            "type": "string",
-            "minLength": 1,
-        },
-        "adapters": {
-            "description": "Number of adapters",
-            "type": "integer",
-            "minimum": 0,
-            "maximum": 36,  # maximum given by the ICH9 chipset in VirtualBox
-        },
-        "use_any_adapter": {
-            "description": "Allow GNS3 to use any VirtualBox adapter",
-            "type": "boolean",
-        },
-        "adapter_type": {
-            "description": "VirtualBox adapter type",
-            "type": "string",
-            "minLength": 1,
-        },
-        "console": {
-            "description": "Console TCP port",
-            "minimum": 1,
-            "maximum": 65535,
-            "type": "integer"
-        },
-        "enable_remote_console": {
-            "description": "Enable the remote console",
-            "type": "boolean"
-        },
-        "ram": {
-            "description": "Amount of RAM",
-            "minimum": 0,
-            "maximum": 65535,
-            "type": "integer"
-        },
-        "headless": {
-            "description": "Headless mode",
-            "type": "boolean"
-        },
-        "acpi_shutdown": {
-            "description": "ACPI shutdown",
-            "type": "boolean"
-        },
-    },
-    "additionalProperties": False,
-}
-
 
 VBOX_OBJECT_SCHEMA = {
     "$schema": "http://json-schema.org/draft-04/schema#",
@@ -224,7 +166,10 @@ VBOX_OBJECT_SCHEMA = {
             "maximum": 65535,
             "type": "integer"
         },
+        "linked_clone": {
+            "description": "Whether the VM is a linked clone or not",
+            "type": "boolean"
+        }
     },
     "additionalProperties": False,
-    "required": ["name", "node_id", "project_id", "node_directory"]
 }