diff --git a/django/utils/inspect.py b/django/utils/inspect.py
index 15cd7fbc45..293cbdffa1 100644
--- a/django/utils/inspect.py
+++ b/django/utils/inspect.py
@@ -52,11 +52,11 @@ def func_accepts_var_args(func):
 
 def method_has_no_args(meth):
     """Return True if a method only accepts 'self'."""
-    args = [
+    count = len([
         p for p in inspect.signature(meth).parameters.values()
         if p.kind == p.POSITIONAL_OR_KEYWORD
-    ]
-    return len(args) == 1
+    ])
+    return count == 0 if inspect.ismethod(meth) else count == 1
 
 
 def func_supports_parameter(func, parameter):
diff --git a/tests/utils_tests/test_inspect.py b/tests/utils_tests/test_inspect.py
index dce8f95ecf..3967f2c886 100644
--- a/tests/utils_tests/test_inspect.py
+++ b/tests/utils_tests/test_inspect.py
@@ -37,3 +37,5 @@ class TestInspectMethods(unittest.TestCase):
     def test_method_has_no_args(self):
         self.assertIs(inspect.method_has_no_args(Person.no_arguments), True)
         self.assertIs(inspect.method_has_no_args(Person.one_argument), False)
+        self.assertIs(inspect.method_has_no_args(Person().no_arguments), True)
+        self.assertIs(inspect.method_has_no_args(Person().one_argument), False)