diff --git a/src/libprs500/ebooks/lrf/html/convert_from.py b/src/libprs500/ebooks/lrf/html/convert_from.py
index fb799cdaa3..4238dcdf9b 100644
--- a/src/libprs500/ebooks/lrf/html/convert_from.py
+++ b/src/libprs500/ebooks/lrf/html/convert_from.py
@@ -428,7 +428,7 @@ class HTMLConverter(object):
     def parse_file(self):
         def get_valid_block(page):
             for item in page.contents:
-                if isinstance(item, (TextBlock, ImageBlock, RuledLine)):
+                if isinstance(item, (Canvas, TextBlock, ImageBlock, RuledLine)):
                     return item
         previous = self.book.last_page()
         self.current_page = self.book.create_page()