diff --git a/python/damask/_rotation.py b/python/damask/_rotation.py
index 9c5884145..7abfaa615 100644
--- a/python/damask/_rotation.py
+++ b/python/damask/_rotation.py
@@ -1055,10 +1055,10 @@ class Rotation:
 
         Parameters
         ----------
-        alpha : numpy.ndarray of size 2
-            Polar coordinates (phi from x,theta from z) of fiber direction in crystal frame.
-        beta : numpy.ndarray of size 2
-            Polar coordinates (phi from x,theta from z) of fiber direction in sample frame.
+        alpha : numpy.ndarray of shape (2)
+            Polar coordinates (phi from x, theta from z) of fiber direction in crystal frame.
+        beta : numpy.ndarray of shape (2)
+            Polar coordinates (phi from x, theta from z) of fiber direction in sample frame.
         sigma : float, optional
             Standard deviation of (Gaussian) misorientation distribution.
             Defaults to 0.