diff --git a/src/widgetastic/widget/base.py b/src/widgetastic/widget/base.py
index a352986..b53b87a 100644
--- a/src/widgetastic/widget/base.py
+++ b/src/widgetastic/widget/base.py
@@ -841,7 +841,11 @@ def __get__(self, o, t):
                             ref_o = nested_getattr(o, self.reference)
                             if isinstance(ref_o, Widget):
                                 ref_value = ref_o.read()
-                                ref_value = ref_value.split(" ")[1] if ref_value.startswith('×') else ref_value
+                                ref_value = (
+                                    ref_value.split(" ")[1]
+                                    if ref_value.startswith("×")
+                                    else ref_value
+                                )
                             else:
                                 ref_value = ref_o
                             condition_arg_cache[self.reference] = ref_value