diff --git a/cv_analysis/utils/spacial.py b/cv_analysis/utils/spacial.py
index b5a955c..2a419c6 100644
--- a/cv_analysis/utils/spacial.py
+++ b/cv_analysis/utils/spacial.py
@@ -160,7 +160,7 @@ def intersection_along_axis(alpha, beta, axis):
     (-[---]----)   ==> [b1, a1, a2, b2] ==> max(0, (a2 - a1)) = (a2 - a1)
         b a
     [-(---)----]   ==> [a1, b1, b2, a2] ==> max(0, (b2 - b1)) = (b2 - b1)
-        b   a
+        b    a
     (----[--)----] ==> [b1, a1, b2, a2] ==> max(0, (b2 - a1)) = (b2 - a1)
     """
     assert axis in ["x", "y"]