diff --git a/gns3server/schemas/virtualbox.py b/gns3server/schemas/virtualbox.py
index e6d7cea4..3c891521 100644
--- a/gns3server/schemas/virtualbox.py
+++ b/gns3server/schemas/virtualbox.py
@@ -86,7 +86,7 @@ VBOX_CREATE_SCHEMA = {
         }
     },
     "additionalProperties": False,
-    "required": ["name", "vmname", "linked_clone"],
+    "required": ["name", "vmname"],
 }