Mark PyUnicode_FromUCS[124] as private
diff --git a/Objects/stringlib/ucs1lib.h b/Objects/stringlib/ucs1lib.h
index 4685c17..c0f7adf 100644
--- a/Objects/stringlib/ucs1lib.h
+++ b/Objects/stringlib/ucs1lib.h
@@ -19,7 +19,7 @@
#define STRINGLIB_FILL Py_UNICODE_FILL
#define STRINGLIB_STR PyUnicode_1BYTE_DATA
#define STRINGLIB_LEN PyUnicode_GET_LENGTH
-#define STRINGLIB_NEW PyUnicode_FromUCS1
+#define STRINGLIB_NEW _PyUnicode_FromUCS1
#define STRINGLIB_RESIZE not_supported
#define STRINGLIB_CHECK PyUnicode_Check
#define STRINGLIB_CHECK_EXACT PyUnicode_CheckExact