diff --git a/src/calibre/ebooks/mobi/reader.py b/src/calibre/ebooks/mobi/reader.py
index 4a828952d8..8196fb98e1 100644
--- a/src/calibre/ebooks/mobi/reader.py
+++ b/src/calibre/ebooks/mobi/reader.py
@@ -449,6 +449,7 @@ class MobiReader(object):
             self.processed_html = '<html><p>' + self.processed_html.replace('\n\n', '<p>') + '</html>'
         self.processed_html = self.processed_html.replace('\r\n', '\n')
         self.processed_html = self.processed_html.replace('> <', '>\n<')
+        self.processed_html = self.processed_html.replace('<mbp: ', '<mbp:')
 
     def remove_random_bytes(self, html):
             return re.sub('\x14|\x15|\x1c|\x1d|\xef|\x12|\x13|\xec',
