diff --git a/deluge/ui/gtkui/preferences.py b/deluge/ui/gtkui/preferences.py
index 1fa83fc57..83e1be9a0 100644
--- a/deluge/ui/gtkui/preferences.py
+++ b/deluge/ui/gtkui/preferences.py
@@ -467,6 +467,8 @@ class Preferences(component.Component):
             elif modifier == "value":
                 widget.set_value(float(value))
             elif modifier == "text":
+                if value is None:
+                    value = ""
                 widget.set_text(value)
             elif modifier == "path_chooser":
                 widget.set_text(value, cursor_end=False, default_text=True)