diff --git a/Lib/bisect.py b/Lib/bisect.py
index d749af8e78..d37da74f7b 100644
--- a/Lib/bisect.py
+++ b/Lib/bisect.py
@@ -107,4 +107,4 @@ def bisect_left(a, x, lo=0, hi=None, *, key=None):
 
 # Create aliases
 bisect = bisect_right
-insort = insort_right
\ No newline at end of file
+insort = insort_right
diff --git a/Lib/test/test_bisect.py b/Lib/test/test_bisect.py
index 4ecde62a35..ba108221eb 100644
--- a/Lib/test/test_bisect.py
+++ b/Lib/test/test_bisect.py
@@ -5,7 +5,7 @@
 
 
 py_bisect = import_helper.import_fresh_module('bisect', blocked=['_bisect'])
-c_bisect = import_helper.import_fresh_module('bisect', fresh=['bisect'])
+c_bisect = import_helper.import_fresh_module('bisect', fresh=['_bisect'])
 
 class Range(object):
     """A trivial range()-like object that has an insert() method."""
@@ -257,6 +257,12 @@ def test_insort(self):
                 target
             )
 
+    def test_insort_keynotNone(self):
+        x = []
+        y = {"a": 2, "b": 1}
+        for f in (self.module.insort_left, self.module.insort_right):
+            self.assertRaises(TypeError, f, x, y, key = "b")
+
 class TestBisectPython(TestBisect, unittest.TestCase):
     module = py_bisect