diff --git a/src/backscattering_analyzer/analyzer.py b/src/backscattering_analyzer/analyzer.py
index c576f63..89dbd4d 100644
--- a/src/backscattering_analyzer/analyzer.py
+++ b/src/backscattering_analyzer/analyzer.py
@@ -122,8 +122,9 @@ class Analyzer:
             [
                 self.bench_movement[0],
                 (self.settings.calib_bench * self.bench_movement[1])
-                    - (self.settings.calib_mirror
-                        * self.mirror_movement[1]),
+                - (
+                    self.settings.calib_mirror * self.mirror_movement[1]
+                ),
             ]
         )
         self.movement[1] -= mean(self.movement[1])