diff --git a/Lib/ast.py b/Lib/ast.py
index 64e7a2551fb1aa..b678dee8c62ede 100644
--- a/Lib/ast.py
+++ b/Lib/ast.py
@@ -102,7 +102,7 @@ def _format(node):
         if isinstance(node, AST):
             fields = [(a, _format(b)) for a, b in iter_fields(node)]
             rv = '%s(%s' % (node.__class__.__name__, ', '.join(
-                ('%s=%s' % field for field in fields)
+                ('%s=%s' % field for field in fields if field[1] != 'None')
                 if annotate_fields else
                 (b for a, b in fields)
             ))
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index a7ee0da38d4834..358c34e3030390 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -575,7 +575,7 @@ def test_dump(self):
         node = ast.parse('spam(eggs, "and cheese")')
         self.assertEqual(ast.dump(node),
             "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), "
-            "args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese', kind=None)], "
+            "args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')], "
             "keywords=[]))], type_ignores=[])"
         )
         self.assertEqual(ast.dump(node, annotate_fields=False),
@@ -586,7 +586,7 @@ def test_dump(self):
             "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load(), "
             "lineno=1, col_offset=0, end_lineno=1, end_col_offset=4), "
             "args=[Name(id='eggs', ctx=Load(), lineno=1, col_offset=5, "
-            "end_lineno=1, end_col_offset=9), Constant(value='and cheese', kind=None, "
+            "end_lineno=1, end_col_offset=9), Constant(value='and cheese', "
             "lineno=1, col_offset=11, end_lineno=1, end_col_offset=23)], keywords=[], "
             "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24), "
             "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24)], type_ignores=[])"
@@ -596,7 +596,7 @@ def test_copy_location(self):
         src = ast.parse('1 + 1', mode='eval')
         src.body.right = ast.copy_location(ast.Num(2), src.body.right)
         self.assertEqual(ast.dump(src, include_attributes=True),
-            'Expression(body=BinOp(left=Constant(value=1, kind=None, lineno=1, col_offset=0, '
+            'Expression(body=BinOp(left=Constant(value=1, lineno=1, col_offset=0, '
             'end_lineno=1, end_col_offset=1), op=Add(), right=Constant(value=2, '
             'lineno=1, col_offset=4, end_lineno=1, end_col_offset=5), lineno=1, '
             'col_offset=0, end_lineno=1, end_col_offset=5))'
@@ -611,7 +611,7 @@ def test_fix_missing_locations(self):
         self.assertEqual(ast.dump(src, include_attributes=True),
             "Module(body=[Expr(value=Call(func=Name(id='write', ctx=Load(), "
             "lineno=1, col_offset=0, end_lineno=1, end_col_offset=5), "
-            "args=[Constant(value='spam', kind=None, lineno=1, col_offset=6, end_lineno=1, "
+            "args=[Constant(value='spam', lineno=1, col_offset=6, end_lineno=1, "
             "end_col_offset=12)], keywords=[], lineno=1, col_offset=0, end_lineno=1, "
             "end_col_offset=13), lineno=1, col_offset=0, end_lineno=1, "
             "end_col_offset=13), Expr(value=Call(func=Name(id='spam', ctx=Load(), "
@@ -626,8 +626,8 @@ def test_increment_lineno(self):
         src = ast.parse('1 + 1', mode='eval')
         self.assertEqual(ast.increment_lineno(src, n=3), src)
         self.assertEqual(ast.dump(src, include_attributes=True),
-            'Expression(body=BinOp(left=Constant(value=1, kind=None, lineno=4, col_offset=0, '
-            'end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, kind=None, '
+            'Expression(body=BinOp(left=Constant(value=1, lineno=4, col_offset=0, '
+            'end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, '
             'lineno=4, col_offset=4, end_lineno=4, end_col_offset=5), lineno=4, '
             'col_offset=0, end_lineno=4, end_col_offset=5))'
         )
@@ -635,8 +635,8 @@ def test_increment_lineno(self):
         src = ast.parse('1 + 1', mode='eval')
         self.assertEqual(ast.increment_lineno(src.body, n=3), src.body)
         self.assertEqual(ast.dump(src, include_attributes=True),
-            'Expression(body=BinOp(left=Constant(value=1, kind=None, lineno=4, col_offset=0, '
-            'end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, kind=None, '
+            'Expression(body=BinOp(left=Constant(value=1, lineno=4, col_offset=0, '
+            'end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, '
             'lineno=4, col_offset=4, end_lineno=4, end_col_offset=5), lineno=4, '
             'col_offset=0, end_lineno=4, end_col_offset=5))'
         )
@@ -655,7 +655,7 @@ def test_iter_child_nodes(self):
         self.assertEqual(next(iterator).value, 23)
         self.assertEqual(next(iterator).value, 42)
         self.assertEqual(ast.dump(next(iterator)),
-            "keyword(arg='eggs', value=Constant(value='leek', kind=None))"
+            "keyword(arg='eggs', value=Constant(value='leek'))"
         )
 
     def test_get_docstring(self):
diff --git a/Misc/NEWS.d/next/Library/2019-03-15-10-12-54.bpo-36287.G7EJG8.rst b/Misc/NEWS.d/next/Library/2019-03-15-10-12-54.bpo-36287.G7EJG8.rst
new file mode 100644
index 00000000000000..52070dd610c0ca
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-03-15-10-12-54.bpo-36287.G7EJG8.rst
@@ -0,0 +1 @@
+Avoid unnecessary verbose on ast.dump() for default fields.