diff -r 90105119ff90 -r 6a0b43a5dec0 tests/misc.py
--- a/tests/misc.py	Mon Jun 24 01:13:02 2019 +0300
+++ b/tests/misc.py	Mon Jun 24 09:45:41 2019 +0300
@@ -229,31 +229,6 @@
                     command_text = element.text,
                 )
 
-@problem_type('bad-whitespace',
-    severity = 'hold',
-    message = lambda whitespaces: str.format(
-        'non-standard whitespace in description: {whitespaces}',
-        whitespaces = whitespaces,
-    )
-)
-def bad_whitespace_test(model):
-    if model.header.valid:
-        import re
-        description = model.header.description
-        # checking against string.whitespace is not adequate enough
-        # because it only contains ASCII characters. So checking using a
-        # regular expression is necessary.
-        bad_whitespaces = set(re.findall('\s', description)) - {' '}
-        if bad_whitespaces:
-            yield report_problem(
-                'bad-whitespace',
-                bad_object = model.body[0],
-                whitespaces = ', '.join(
-                    repr(whitespace)
-                    for whitespace in sorted(bad_whitespaces)
-                ),
-            )
-
 manifest = {
     'tests': [
         colours_test,
@@ -268,6 +243,5 @@
         moved_to_with_extension_test,
         bfc_invertnext_not_on_subfile_test,
         metacommands_test,
-        bad_whitespace_test,
     ],
 }