diff --git a/tests/helpme/test_create.py b/tests/helpme/test_create.py
index c92d23483..38f09b74a 100644
--- a/tests/helpme/test_create.py
+++ b/tests/helpme/test_create.py
@@ -468,7 +468,7 @@ def calculate_cs_normal_vector(cs_cp, res_cp, rand):
 
     # check if normal vector is parallel to tangent vector
     # --> then transformation of cross-section is correct
-    assert np.allclose(np.cross(rand_traj_tangent, normal_vector).all(), 0)
+    assert np.allclose(np.cross(rand_traj_tangent, normal_vector), 0)
 
     ## TEST ALSO WITH CUSTOM NORMAL VECTOR ##