diff --git a/manim/mobject/graphing/probability.py b/manim/mobject/graphing/probability.py
index d1f960d9c7..fb86b2b777 100644
--- a/manim/mobject/graphing/probability.py
+++ b/manim/mobject/graphing/probability.py
@@ -281,7 +281,10 @@ def __init__(
 
         elif len(y_range) == 2:
             y_step_target = max(self.values) / y_length
-            y_range = [*y_range, round(y_step_target, int(np.ceil(-np.log10(y_step_target))))]
+            y_range = [
+                *y_range,
+                round(y_step_target, int(np.ceil(-np.log10(y_step_target)))),
+            ]
 
         if x_length is None:
             x_length = min(len(self.values), config.frame_width - 2)