PYTHONFSENCODING is not available on Windows or Mac OS X
diff --git a/Modules/main.c b/Modules/main.c
index a5c8905..dc8d84c 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -94,13 +94,15 @@
PYTHONPATH : '%c'-separated list of directories prefixed to the\n\
default module search path. The result is sys.path.\n\
";
-static char *usage_5 = "\
-PYTHONHOME : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n\
- The default module search path uses %s.\n\
-PYTHONCASEOK : ignore case in 'import' statements (Windows).\n\
-PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n\
-PYTHONFSENCODING: Encoding used for the filesystem.\n\
-";
+static char *usage_5 =
+"PYTHONHOME : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n"
+" The default module search path uses %s.\n"
+"PYTHONCASEOK : ignore case in 'import' statements (Windows).\n"
+"PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n"
+#if !(defined(MS_WINDOWS) && defined(HAVE_USABLE_WCHAR_T)) && !defined(__APPLE__)
+"PYTHONFSENCODING: Encoding used for the filesystem.\n"
+#endif
+;
FILE *
_Py_wfopen(const wchar_t *path, const wchar_t *mode)