diff --git a/python/damask/_orientation.py b/python/damask/_orientation.py
index f84ca9952..d1488c14e 100644
--- a/python/damask/_orientation.py
+++ b/python/damask/_orientation.py
@@ -657,7 +657,7 @@ class Orientation(Rotation,Crystal):
         """
         eq  = self.equivalent
         blend = util.shapeblender(eq.shape,np.array(vector).shape[:-1])
-        poles = eq.broadcast_to(blend,mode='right') @ np.broadcast_to(np.array(vector),blend+(3,))
+        poles = eq.broadcast_to(blend,mode='right') @ np.broadcast_to(np.array(vector),blend+(3,)) #type: ignore
         ok    = self.in_SST(poles,proper=proper)
         ok   &= np.cumsum(ok,axis=0) == 1
         loc   = np.where(ok)
@@ -886,8 +886,7 @@ class Orientation(Rotation,Crystal):
             blend += sym_ops.shape
             v = sym_ops.broadcast_to(shape) \
               @ np.broadcast_to(v.reshape(util.shapeshifter(v.shape,shape+(3,))),shape+(3,))
-        return ~(self.broadcast_to(blend)) \
-               @ np.broadcast_to(v,blend+(3,))
+        return ~(self.broadcast_to(blend))@ np.broadcast_to(v,blend+(3,)) #type: ignore
 
 
     def Schmid(self, *,
diff --git a/python/damask/util.py b/python/damask/util.py
index b4c287884..3b0af7177 100644
--- a/python/damask/util.py
+++ b/python/damask/util.py
@@ -9,7 +9,7 @@ import re
 import fractions
 from collections import abc
 from functools import reduce
-from typing import Union, Tuple, Iterable, Callable, Dict, List, Any, Literal, SupportsIndex, Sequence
+from typing import Union, Tuple, Iterable, Callable, Dict, List, Any, Literal, SupportsIndex
 from pathlib import Path
 
 import numpy as np
@@ -427,7 +427,7 @@ def hybrid_IA(dist: np.ndarray,
 def shapeshifter(fro: Tuple[int, ...],
                  to: Tuple[int, ...],
                  mode: Literal['left','right'] = 'left',
-                 keep_ones: bool = False) -> Sequence[SupportsIndex]:
+                 keep_ones: bool = False) -> Tuple[SupportsIndex, ...]:
     """
     Return dimensions that reshape 'fro' to become broadcastable to 'to'.
 
@@ -490,7 +490,7 @@ def shapeshifter(fro: Tuple[int, ...],
 
 
 def shapeblender(a: Tuple[int, ...],
-                 b: Tuple[int, ...]) -> Sequence[SupportsIndex]:
+                 b: Tuple[int, ...]) -> Tuple[SupportsIndex, ...]:
     """
     Return a shape that overlaps the rightmost entries of 'a' with the leftmost of 'b'.