diff --git a/free-programming-books.md b/free-programming-books.md
index 77d14558884ccc451ce04c319ba650bd0fe471de..106f446446b57b5e6fb4037f1a7bcc327c6cf08d 100755
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -592,7 +592,7 @@
 * [Études for Erlang](http://chimera.labs.oreilly.com/books/1234000000726/index.html) - J. David Eisenberg
 * [Learn You Some Erlang For Great Good](http://learnyousomeerlang.com/) - Frederic Trottier-Hebert
 * [Concurrent Programming in ERLANG](http://www.erlang.org/download/erlang-book-part1.pdf)
-* [Erlang Handbook](https://github.com/esl/erlang-handbook/raw/master/output/ErlangHandbook.pdf)
+* [Erlang Handbook](https://github.com/esl/erlang-handbook/raw/master/output/ErlangHandbook.pdf) (PDF)
 
 
 ###Flex