diff --git a/bezier/_surface_helpers.py b/bezier/_surface_helpers.py
index 29e3ee6a..0ac01f7a 100644
--- a/bezier/_surface_helpers.py
+++ b/bezier/_surface_helpers.py
@@ -265,7 +265,9 @@ def polynomial_sign(poly_surface):
             number of subdivisions.
     """
     # The indices where the corner nodes in a surface are.
+    # pylint: disable=protected-access
     corner_indices = (0, poly_surface._degree, -1)
+    # pylint: enable=protected-access
     sub_polys = [poly_surface]
     signs = set()
     for _ in six.moves.xrange(_MAX_POLY_SUBDIVISIONS):
diff --git a/tests/test__surface_helpers.py b/tests/test__surface_helpers.py
index 382df97b..f49c829f 100644
--- a/tests/test__surface_helpers.py
+++ b/tests/test__surface_helpers.py
@@ -99,7 +99,9 @@ def test_conclusion_from_corner_node(self):
         #          [0.0   0.5  ]
         #          [0.5   0.5  ]
         #          [0.25  1.0  ]
+        # pylint: disable=no-member
         bernstein = np.array([[1.0, 0.5, 0.0, 0.75, 0.4375, 1.0]]).T
+        # pylint: enable=no-member
         self._helper(bernstein, 0)
 
 
diff --git a/tox.ini b/tox.ini
index c9cb18e6..80847c10 100644
--- a/tox.ini
+++ b/tox.ini
@@ -91,13 +91,13 @@ commands =
       --application-import-names="bezier,tests" \
       {toxinidir}/bezier {toxinidir}/tests
     pylint --rcfile pylintrc \
-      --max-module-lines=2076 \
+      --max-module-lines=2083 \
       {toxinidir}/bezier
     pylint --rcfile pylintrc \
       --disable=missing-docstring \
       --disable=protected-access \
       --disable=too-many-public-methods \
-      --max-module-lines=1802 \
+      --max-module-lines=1813 \
       {toxinidir}/functional_tests \
       {toxinidir}/tests
 deps =