diff --git a/src/yapsut/vectorized_elemental_rotations.py b/src/yapsut/vectorized_elemental_rotations.py
index 3a4f615c2ed22a271b5111fc1679a4933c3b4324..81c931768162fbfefed2dd92b85f675da5fd6551 100644
--- a/src/yapsut/vectorized_elemental_rotations.py
+++ b/src/yapsut/vectorized_elemental_rotations.py
@@ -14,7 +14,7 @@ vAY3D = np.array([0,1,0])
 vAZ3D = np.array([0,0,1])
 
 
-def _vectorized_rotation_base_matrix(self,Angle) :
+def _vectorized_rotation_base_matrix(Angle) :
    """
 commodity function to define a base for a vectorized rotation matrix, returns the components 
 I, c, s of a list of elemental 3D rotation matrices with