diff --git a/Lib/test/test_bisect.py b/Lib/test/test_bisect.py
index 20f8b9d7c0aa870a1130b1131aaf1960a9cd7fe8..ba108221ebf4543b4b96526ec25425a4776d1809 100644
--- a/Lib/test/test_bisect.py
+++ b/Lib/test/test_bisect.py
@@ -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
 
diff --git a/Misc/NEWS.d/next/Library/2022-05-16-14-35-39.gh-issue-92839.owSMyo.rst b/Misc/NEWS.d/next/Library/2022-05-16-14-35-39.gh-issue-92839.owSMyo.rst
new file mode 100644
index 0000000000000000000000000000000000000000..b425bd9c47bc91ea6921b99cbf1346f695224cf1
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-05-16-14-35-39.gh-issue-92839.owSMyo.rst
@@ -0,0 +1 @@
+Fixed crash resulting from calling bisect.insort() or bisect.insort_left() with the key argument not equal to None.
diff --git a/Modules/_bisectmodule.c b/Modules/_bisectmodule.c
index 26c4b9bfb26b22f45901d083f97fbd73f9a04dec..16f981e7296ba969e462c597a37916a96c98558f 100644
--- a/Modules/_bisectmodule.c
+++ b/Modules/_bisectmodule.c
@@ -118,7 +118,7 @@ _bisect_insort_right_impl(PyObject *module, PyObject *a, PyObject *x,
         index = internal_bisect_right(a, x, lo, hi, key);
     } else {
         key_x = PyObject_CallOneArg(key, x);
-        if (x == NULL) {
+        if (key_x == NULL) {
             return NULL;
         }
         index = internal_bisect_right(a, key_x, lo, hi, key);
@@ -245,7 +245,7 @@ _bisect_insort_left_impl(PyObject *module, PyObject *a, PyObject *x,
         index = internal_bisect_left(a, x, lo, hi, key);
     } else {
         key_x = PyObject_CallOneArg(key, x);
-        if (x == NULL) {
+        if (key_x == NULL) {
             return NULL;
         }
         index = internal_bisect_left(a, key_x, lo, hi, key);