diff --git a/omeroweb/connector.py b/omeroweb/connector.py
index 4912822b5b..e0ab7647ff 100644
--- a/omeroweb/connector.py
+++ b/omeroweb/connector.py
@@ -281,6 +281,8 @@ def from_session(request):
         v = request.session.get("connector", None)
         if v is None:
             return None
+        if isinstance(v, Connector):
+            return v
         return Connector(**v)
 
     def to_session(self, request):