diff --git a/oml/nodes.py b/oml/nodes.py
index 4a8feab..2307550 100644
--- a/oml/nodes.py
+++ b/oml/nodes.py
@@ -193,7 +193,7 @@ class Node(Thread):
 
         version = r.headers.get('X-Node-Protocol', None)
         if version != settings.NODE_PROTOCOL:
-            logger.debug('version does not match local: %s remote %s', settings.NODE_PROTOCOL, version)
+            logger.debug('version does not match local: %s remote %s (%s)', settings.NODE_PROTOCOL, version, self.user_id)
             self.online = False
             if version > settings.NODE_PROTOCOL:
                 state.update_required = True
diff --git a/oml/websocket.py b/oml/websocket.py
index d340506..20447d0 100644
--- a/oml/websocket.py
+++ b/oml/websocket.py
@@ -28,7 +28,7 @@ class Handler(WebSocketHandler):
             )
 
     def open(self):
-        if self.request.headers['origin'] not in ('null', 'http://127.0.0.1:9842') \
+        if self.request.headers['origin'] not in ('null', 'file://', 'http://127.0.0.1:9842') \
             and self.request.host not in self.request.headers['origin']:
             logger.debug('reject cross site attempt to open websocket %s', self.request)
             self.close()