diff --git a/qfit/views/prefit_view.py b/qfit/views/prefit_view.py
index c79a969..5f9fe28 100644
--- a/qfit/views/prefit_view.py
+++ b/qfit/views/prefit_view.py
@@ -347,7 +347,7 @@ class SweepSettingsView(QObject):
         And the corresponding values should be the widgets for the options.
     """
 
-    optionUpdated = Signal(str, Any)
+    optionUpdated = Signal(str, object)
 
     def __init__(
         self,