diff --git a/pyoo.py b/pyoo.py
index 23e3e6b..b0ea75c 100644
--- a/pyoo.py
+++ b/pyoo.py
@@ -19,6 +19,8 @@
 
 # Filters used when saving document.
 FILTER_PDF_EXPORT = 'writer_pdf_Export'
+FILTER_WRITER_PDF_EXPORT = 'writer_pdf_Export'
+FILTER_CALC_PDF_EXPORT = 'calc_pdf_Export'
 FILTER_EXCEL_97 = 'MS Excel 97'
 FILTER_EXCEL_2007 = 'Calc MS Excel 2007 XML'