diff --git a/stdlib/2.7/__builtin__.pyi b/stdlib/2.7/__builtin__.pyi
index 2c877c285..9dc5ca948 100644
--- a/stdlib/2.7/__builtin__.pyi
+++ b/stdlib/2.7/__builtin__.pyi
@@ -1,5 +1,8 @@
 # Stubs for builtins (Python 2.7)
 
+# True and False are deliberately omitted because they are keywords in
+# Python 3, and stub files conform to Python 3 syntax.
+
 from typing import (
     TypeVar, Iterator, Iterable, overload,
     Sequence, Mapping, Tuple, List, Any, Dict, Callable, Generic, Set,
@@ -629,10 +632,6 @@ class module:
     __file__ = ...  # type: str
     __dict__ = ...  # type: Dict[unicode, Any]
 
-True = ...  # type: bool
-False = ...  # type: bool
-__debug__ = False
-
 long = int
 bytes = str
 
diff --git a/stdlib/3/builtins.pyi b/stdlib/3/builtins.pyi
index 7a6a4994b..1e4eea8ef 100644
--- a/stdlib/3/builtins.pyi
+++ b/stdlib/3/builtins.pyi
@@ -605,10 +605,6 @@ class module:
     __file__ = ...  # type: str
     __dict__ = ...  # type: Dict[str, Any]
 
-True = ...  # type: bool
-False = ...  # type: bool
-__debug__ = False
-
 NotImplemented = ...  # type: Any
 
 def abs(n: SupportsAbs[_T]) -> _T: ...