diff --git a/manim/mobject/graphing/coordinate_systems.py b/manim/mobject/graphing/coordinate_systems.py
index 6b8237827f..da4228fac5 100644
--- a/manim/mobject/graphing/coordinate_systems.py
+++ b/manim/mobject/graphing/coordinate_systems.py
@@ -1932,8 +1932,8 @@ def __init__(
         self,
         x_range: Sequence[float] | None = None,
         y_range: Sequence[float] | None = None,
-        x_length: float | None = round(config.frame_width) - 2,
-        y_length: float | None = round(config.frame_height) - 2,
+        x_length: float | None = None,
+        y_length: float | None = None,
         axis_config: dict | None = None,
         x_axis_config: dict | None = None,
         y_axis_config: dict | None = None,
@@ -1989,6 +1989,16 @@ def __init__(
         else:
             self.y_axis_config["exclude_origin_tick"] = False
 
+        if "unit_size" in self.x_axis_config:
+            x_length = self.x_axis_config["unit_size"]
+        else:
+            x_length = round(config.frame_width) - 2
+
+        if "unit_size" in self.y_axis_config:
+            y_length = self.y_axis_config["unit_size"]
+        else:
+            y_length = round(config.frame_width) - 2
+
         self.x_axis = self._create_axis(self.x_range, self.x_axis_config, self.x_length)
         self.y_axis = self._create_axis(self.y_range, self.y_axis_config, self.y_length)
 
diff --git a/manim/utils/deprecation.py b/manim/utils/deprecation.py
index 112c62fa5d..4a2f7b80d1 100644
--- a/manim/utils/deprecation.py
+++ b/manim/utils/deprecation.py
@@ -407,9 +407,11 @@ def foo(**kwargs):
 
         @deprecated_params(
             redirections=[
-                lambda buff=1: {"buff_x": buff[0], "buff_y": buff[1]}
-                if isinstance(buff, tuple)
-                else {"buff_x": buff, "buff_y": buff}
+                lambda buff=1: (
+                    {"buff_x": buff[0], "buff_y": buff[1]}
+                    if isinstance(buff, tuple)
+                    else {"buff_x": buff, "buff_y": buff}
+                )
             ]
         )
         def foo(**kwargs):