diff --git a/gns3server/schemas/node.py b/gns3server/schemas/node.py
index ddb9a17b..2905e0b2 100644
--- a/gns3server/schemas/node.py
+++ b/gns3server/schemas/node.py
@@ -144,7 +144,7 @@ NODE_OBJECT_SCHEMA = {
         },
         "console_type": {
             "description": "Console type",
-            "enum": ["vnc", "telnet", "http", "https", "spice", "none"]
+            "enum": ["vnc", "telnet", "http", "https", "spice", "none", None]
         },
         "properties": {
             "description": "Properties specific to an emulator",