diff --git a/elastica/_elastica_numba/_joint.py b/elastica/_elastica_numba/_joint.py
index 4235f974..22c5b2d5 100644
--- a/elastica/_elastica_numba/_joint.py
+++ b/elastica/_elastica_numba/_joint.py
@@ -186,7 +186,7 @@ def _calculate_contact_forces(
 
 @numba.njit(cache=True)
 def _aabbs_not_intersecting(aabb_one, aabb_two):
-    """ Returns true if not intersecting else false"""
+    """Returns true if not intersecting else false"""
     if (aabb_one[0, 1] < aabb_two[0, 0]) | (aabb_one[0, 0] > aabb_two[0, 1]):
         return 1
     if (aabb_one[1, 1] < aabb_two[1, 0]) | (aabb_one[1, 0] > aabb_two[1, 1]):
diff --git a/elastica/_elastica_numba/_rotations.py b/elastica/_elastica_numba/_rotations.py
index 49c209c2..ca795507 100644
--- a/elastica/_elastica_numba/_rotations.py
+++ b/elastica/_elastica_numba/_rotations.py
@@ -46,6 +46,7 @@ def _get_rotation_matrix(scale: float, axis_collection):
     return rot_mat
 
 
+@njit(cache=True)
 def _rotate(director_collection, scale: float, axis_collection):
     """
     Does alibi rotations
diff --git a/examples/Visualization/_povmacros.py b/examples/Visualization/_povmacros.py
index 351e62ae..330bd4a0 100644
--- a/examples/Visualization/_povmacros.py
+++ b/examples/Visualization/_povmacros.py
@@ -189,7 +189,7 @@ def __init__(self, pre_scripts="", post_scripts=""):
         self._light_assign = defaultdict(list)
 
     def add_camera(self, name, **kwargs):
-        """ Add camera (viewpoint) """
+        """Add camera (viewpoint)"""
         self.cameras.append(self.Camera(name=name, **kwargs))
 
     def add_light(self, camera_id=-1, **kwargs):
diff --git a/tests/test_elastica_numba/test_rod_nb.py b/tests/test_elastica_numba/test_rod_nb.py
index 1e6ce078..567ab3a9 100644
--- a/tests/test_elastica_numba/test_rod_nb.py
+++ b/tests/test_elastica_numba/test_rod_nb.py
@@ -26,7 +26,7 @@ def __init__(self):
 # https://docs.pytest.org/en/latest/fixture.html
 @pytest.fixture(scope="module", params=[15, 31])
 def load_data_for_bootstrapping_state(request):
-    """ Yield states for bootstrapping """
+    """Yield states for bootstrapping"""
     n_elem = request.param
     n_nodes = n_elem + 1
     dim = 3
diff --git a/tests/test_elastica_numba/test_timestepper_nb.py b/tests/test_elastica_numba/test_timestepper_nb.py
index 0c9976aa..f394a8f1 100644
--- a/tests/test_elastica_numba/test_timestepper_nb.py
+++ b/tests/test_elastica_numba/test_timestepper_nb.py
@@ -37,7 +37,7 @@
 
 
 class TestExtendStepperInterface:
-    """ TODO add documentation """
+    """TODO add documentation"""
 
     class MockSymplecticStepper:
         Tag = SymplecticStepperTag()
diff --git a/tests/test_elastica_numpy/test_rod_np.py b/tests/test_elastica_numpy/test_rod_np.py
index ae9e0b3b..16004690 100644
--- a/tests/test_elastica_numpy/test_rod_np.py
+++ b/tests/test_elastica_numpy/test_rod_np.py
@@ -26,7 +26,7 @@ def __init__(self):
 # https://docs.pytest.org/en/latest/fixture.html
 @pytest.fixture(scope="module", params=[15, 31])
 def load_data_for_bootstrapping_state(request):
-    """ Yield states for bootstrapping """
+    """Yield states for bootstrapping"""
     n_elem = request.param
     n_nodes = n_elem + 1
     dim = 3
diff --git a/tests/test_elastica_numpy/test_timestepper_np.py b/tests/test_elastica_numpy/test_timestepper_np.py
index 597ee8f3..e3f5bf5b 100644
--- a/tests/test_elastica_numpy/test_timestepper_np.py
+++ b/tests/test_elastica_numpy/test_timestepper_np.py
@@ -37,7 +37,7 @@
 
 
 class TestExtendStepperInterface:
-    """ TODO add documentation """
+    """TODO add documentation"""
 
     class MockSymplecticStepper:
         Tag = SymplecticStepperTag()