diff --git a/Lib/plistlib.py b/Lib/plistlib.py
index b66639ca9e5..4f360f32203 100644
--- a/Lib/plistlib.py
+++ b/Lib/plistlib.py
@@ -47,7 +47,7 @@
 """
 __all__ = [
     "readPlist", "writePlist", "readPlistFromBytes", "writePlistToBytes",
-    "Plist", "Data", "Dict", "FMT_XML", "FMT_BINARY",
+    "Plist", "Data", "Dict", "InvalidFileException", "FMT_XML", "FMT_BINARY",
     "load", "dump", "loads", "dumps"
 ]
 
diff --git a/Lib/test/test_plistlib.py b/Lib/test/test_plistlib.py
index 662ed904b0b..60ff9183c2c 100644
--- a/Lib/test/test_plistlib.py
+++ b/Lib/test/test_plistlib.py
@@ -526,8 +526,14 @@ def test_dataobject_deprecated(self):
         self.assertEqual(cur, in_data)
 
 
+class MiscTestCase(unittest.TestCase):
+    def test__all__(self):
+        blacklist = {"PlistFormat", "PLISTHEADER"}
+        support.check__all__(self, plistlib, blacklist=blacklist)
+
+
 def test_main():
-    support.run_unittest(TestPlistlib, TestPlistlibDeprecated)
+    support.run_unittest(TestPlistlib, TestPlistlibDeprecated, MiscTestCase)
 
 
 if __name__ == '__main__':