diff --git a/stdlib/2/email/charset.pyi b/stdlib/2/email/charset.pyi
index 82ba6c0bb..88b5f88d1 100644
--- a/stdlib/2/email/charset.pyi
+++ b/stdlib/2/email/charset.pyi
@@ -2,6 +2,10 @@ def add_charset(charset, header_enc=..., body_enc=..., output_charset=...) -> No
 def add_alias(alias, canonical) -> None: ...
 def add_codec(charset, codecname) -> None: ...
 
+QP: int  # undocumented
+BASE64: int  # undocumented
+SHORTEST: int  # undocumented
+
 class Charset:
     input_charset = ...
     header_encoding = ...
diff --git a/stdlib/3/email/charset.pyi b/stdlib/3/email/charset.pyi
index 979726607..3f8c95f4e 100644
--- a/stdlib/3/email/charset.pyi
+++ b/stdlib/3/email/charset.pyi
@@ -2,9 +2,9 @@
 
 from typing import List, Optional, Iterator, Any
 
-QP: int
-BASE64: int
-SHORTEST: int
+QP: int  # undocumented
+BASE64: int  # undocumented
+SHORTEST: int  # undocumented
 
 class Charset:
     input_charset = ...  # type: str