Always define _PyIsSelectable_fd().
diff --git a/Include/fileobject.h b/Include/fileobject.h
index 86ade5a..1b540f9 100644
--- a/Include/fileobject.h
+++ b/Include/fileobject.h
@@ -84,13 +84,11 @@
#define _PyVerify_fd(A) (1) /* dummy */
#endif
-#ifdef HAVE_SELECT
/* A routine to check if a file descriptor can be select()-ed. */
-#ifdef Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE
- #define _PyIsSelectable_fd(FD) (1)
-#else
+#ifdef HAVE_SELECT
#define _PyIsSelectable_fd(FD) (((FD) >= 0) && ((FD) < FD_SETSIZE))
-#endif
+#else
+ #define _PyIsSelectable_fd(FD) (1)
#endif /* HAVE_SELECT */
#ifdef __cplusplus