diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index ae252b2a05f..f7e8f2418b6 100644
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -101,6 +101,10 @@ def test_run_code(self):
 
         # Test handling of non-ascii data
         if sys.getfilesystemencoding() != 'ascii':
+            if test.support.verbose:
+                import locale
+                print('locale encoding = %s, filesystem encoding = %s'
+                      % (locale.getpreferredencoding(), sys.getfilesystemencoding()))
             command = "assert(ord('\xe9') == 0xe9)"
             assert_python_ok('-c', command)