diff --git a/lib/parse/parseIgnore.js b/lib/parse/parseIgnore.js
index b23bfd8b3..fafcc6f5e 100644
--- a/lib/parse/parseIgnore.js
+++ b/lib/parse/parseIgnore.js
@@ -27,9 +27,6 @@ function parseIgnore(book) {
 
         // Skip book outputs
         '_book',
-        '*.pdf',
-        '*.epub',
-        '*.mobi',
 
         // Ignore files in the templates folder
         '_layouts'