diff --git a/tests/tests.py b/tests/tests.py
index 8e64243..bf8630d 100644
--- a/tests/tests.py
+++ b/tests/tests.py
@@ -22,10 +22,10 @@ def test_helical_extrusion(self):
         # face 0 is the cylinder
         # face 1 is pointing in positive z direction
         # face 2 is pointing in negative z direction
-        self.assertTrue((solid.Faces[1].normalAt(0,0) - normal).Length < 10e-15)
-        self.assertTrue((solid.Faces[2].normalAt(0,0) + normal).Length < 10e-15)
-        self.assertTrue(solid.Faces[1].valueAt(0,0)[2] - height < 10e-15)
-        self.assertTrue(solid.Faces[2].valueAt(0,0)[2] - 0. < 10e-15)
+        self.assertAlmostEqual((solid.Faces[1].normalAt(0,0) - normal).Length, 0.)
+        self.assertAlmostEqual((solid.Faces[2].normalAt(0,0) + normal).Length, 0.)
+        self.assertAlmostEqual(solid.Faces[1].valueAt(0,0)[2], height)
+        self.assertAlmostEqual(solid.Faces[2].valueAt(0,0)[2], 0.)
 
 if __name__ == "__main__":
     unittest.main(verbosity=4)
\ No newline at end of file