diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index e0ad0d3d3f2..4170ad381b7 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -1231,13 +1231,14 @@ def restore_support_TESTFN(self, saved_value):
             elif os.path.isdir(support.TESTFN):
                 shutil.rmtree(support.TESTFN)
 
-    _lc = [getattr(locale, lc) for lc in dir(locale) if lc.startswith('LC_')]
+    _lc = [getattr(locale, lc) for lc in dir(locale)
+           if lc.startswith('LC_') and lc != 'LC_ALL']
     def get_locale(self):
         pairings = []
         for lc in self._lc:
             try:
                 pairings.append((lc, locale.getlocale(lc)))
-            except TypeError:
+            except (TypeError, ValueError):
                 continue
         return pairings
     def restore_locale(self, saved):