diff --git a/src/libprs500/ebooks/lrf/parser.py b/src/libprs500/ebooks/lrf/parser.py
index a8c00d0d01..68a383d72a 100644
--- a/src/libprs500/ebooks/lrf/parser.py
+++ b/src/libprs500/ebooks/lrf/parser.py
@@ -32,6 +32,7 @@ class LRFDocument(LRFMetaFile):
         self.page_trees = []
         self.font_map = {}
         self.image_map = {}
+        self.toc = ''
         self.keep_parsing = True
         
     def parse(self):