diff --git a/django/utils/formats.py b/django/utils/formats.py
index 18fcbb600f..c23a37cb2b 100644
--- a/django/utils/formats.py
+++ b/django/utils/formats.py
@@ -6,6 +6,7 @@ from django.utils.translation import get_language, to_locale, check_for_language
 from django.utils.importlib import import_module
 from django.utils.encoding import smart_str
 from django.utils import dateformat, numberformat, datetime_safe
+from django.utils.safestring import mark_safe
 
 # format_cache is a mapping from (format_type, lang) to the format string.
 # By using the cache, it is possible to avoid running get_format_modules
@@ -114,7 +115,9 @@ def localize(value, use_l10n=None):
     If use_l10n is provided and is not None, that will force the value to
     be localized (or not), overriding the value of settings.USE_L10N.
     """
-    if isinstance(value, (decimal.Decimal, float, int, long)):
+    if isinstance(value, bool):
+        return mark_safe(unicode(value))
+    elif isinstance(value, (decimal.Decimal, float, int, long)):
         return number_format(value, use_l10n=use_l10n)
     elif isinstance(value, datetime.datetime):
         return date_format(value, 'DATETIME_FORMAT', use_l10n=use_l10n)
diff --git a/tests/regressiontests/i18n/tests.py b/tests/regressiontests/i18n/tests.py
index 615ffe822c..f552795f06 100644
--- a/tests/regressiontests/i18n/tests.py
+++ b/tests/regressiontests/i18n/tests.py
@@ -268,6 +268,7 @@ class FormattingTests(TestCase):
             self.assertEqual(u'66.666,666', localize(self.n))
             self.assertEqual(u'99.999,999', localize(self.f))
             self.assertEqual(u'10.000', localize(self.l))
+            self.assertEqual(u'True', localize(True))
 
             settings.USE_THOUSAND_SEPARATOR = False
             self.assertEqual(u'66666,666', localize(self.n))