diff --git a/Include/compile.h b/Include/compile.h
index e5840af8cc4..296df90f325 100644
--- a/Include/compile.h
+++ b/Include/compile.h
@@ -41,7 +41,6 @@ typedef struct {
    effect, this passes on the "from __future__ import generators" state
    in effect when the code block was compiled. */
 #define CO_GENERATOR_ALLOWED    0x1000
-/* XXX Ditto for future division */
 #define CO_FUTURE_DIVISION    	0x2000
 
 extern DL_IMPORT(PyTypeObject) PyCode_Type;
@@ -64,22 +63,15 @@ DL_IMPORT(int) PyCode_Addr2Line(PyCodeObject *, int);
 typedef struct {
     int ff_found_docstring;
     int ff_last_lineno;
-    int ff_nested_scopes;
-    int ff_generators;
-    int ff_division;
+    int ff_features;
 } PyFutureFeatures;
 
 DL_IMPORT(PyFutureFeatures *) PyNode_Future(struct _node *, char *);
 DL_IMPORT(PyCodeObject *) PyNode_CompileFlags(struct _node *, char *,
 					      PyCompilerFlags *);
 
-#define NESTED_SCOPES_DEFAULT 1
 #define FUTURE_NESTED_SCOPES "nested_scopes"
-
-#define GENERATORS_DEFAULT 0
 #define FUTURE_GENERATORS "generators"
-
-#define DIVISION_DEFAULT 0
 #define FUTURE_DIVISION "division"
 
 /* for internal use only */
diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index 55e1ddd4eb1..95ac15ce5e4 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -7,14 +7,9 @@
 extern "C" {
 #endif
 
-/* These flags are named after the __future__ statements that introduced
-   them.  May not remain true for later additions, so fiddle this comment
-   accordingly then. */
-#define PyCF_NESTED_SCOPES	(0x00000001UL)
-#define PyCF_GENERATORS		(0x00000002UL)
-#define PyCF_DIVISION		(0x00000004UL)
+#define PyCF_MASK (CO_GENERATOR_ALLOWED | CO_FUTURE_DIVISION)
 typedef struct {
-	unsigned long cf_flags;  /* bitmask of PyCF_xxx flags */
+	int cf_flags;  /* bitmask of CO_xxx flags relevant to future */
 } PyCompilerFlags;
 
 DL_IMPORT(void) Py_SetProgramName(char *);