diff --git a/src/calibre/ebooks/conversion/plugins/rtf_input.py b/src/calibre/ebooks/conversion/plugins/rtf_input.py
index f94ccc9ec4..5bf2d79475 100644
--- a/src/calibre/ebooks/conversion/plugins/rtf_input.py
+++ b/src/calibre/ebooks/conversion/plugins/rtf_input.py
@@ -256,6 +256,7 @@ class RTFInput(InputFormatPlugin):
         try:
             xml = self.generate_xml(stream.name)
         except RtfInvalidCodeException as e:
+            self.log.exception('Unable to parse RTF')
             raise ValueError(_('This RTF file has a feature calibre does not '
             'support. Convert it to HTML first and then try it.\n%s')%e)