diff --git a/test/test_mediafile.py b/test/test_mediafile.py
index 8b23d1cee..717364128 100644
--- a/test/test_mediafile.py
+++ b/test/test_mediafile.py
@@ -662,7 +662,7 @@ class ReadWriteTestBase(ArtTestMixin, GenreListTestMixin,
                 errors.append('Tag %s does not exist' % key)
             else:
                 if value2 != value:
-                    errors.append('Tag %s: %s != %s' % (key, value2, value))
+                    errors.append('Tag %s: %r != %r' % (key, value2, value))
         if any(errors):
             errors = ['Tags did not match'] + errors
             self.fail('\n  '.join(errors))