diff --git a/test/old/testdir/test_python3.vim b/test/old/testdir/test_python3.vim
index cc84ffddb4..7060da6cc1 100644
--- a/test/old/testdir/test_python3.vim
+++ b/test/old/testdir/test_python3.vim
@@ -14,6 +14,7 @@ func Test_AAA_python3_setup()
     py33_type_error_pattern = re.compile('^__call__\(\) takes (\d+) positional argument but (\d+) were given$')
     py37_exception_repr = re.compile(r'([^\(\),])(\)+)$')
     py39_type_error_pattern = re.compile('\w+\.([^(]+\(\) takes)')
+    py310_type_error_pattern = re.compile('takes (\d+) positional argument but (\d+) were given')
 
     def emsg(ei):
       return ei[0].__name__ + ':' + repr(ei[1].args)
@@ -49,6 +50,7 @@ func Test_AAA_python3_setup()
                             msg = msg.replace(newmsg2, oldmsg2)
                         # Python 3.9 reports errors like "vim.command() takes ..." instead of "command() takes ..."
                         msg = py39_type_error_pattern.sub(r'\1', msg)
+                        msg = py310_type_error_pattern.sub(r'takes exactly \1 positional argument (\2 given)', msg)
                 elif sys.version_info >= (3, 5) and e.__class__ is ValueError and str(e) == 'embedded null byte':
                     msg = repr((TypeError, TypeError('expected bytes with no null')))
                 else:
@@ -2326,6 +2328,7 @@ func Test_python3_errors()
   py3 cb = vim.current.buffer
 
   py3 << trim EOF
+    import os
     d = vim.Dictionary()
     ned = vim.Dictionary(foo='bar', baz='abcD')
     dl = vim.Dictionary(a=1)