diff --git a/free-programming-books.md b/free-programming-books.md
index 5e97d0193..89ce002da 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -318,7 +318,7 @@
 ###Ada
 * [Ada 95: The Craft of Object-Oriented Programming](http://faculty.cs.wwu.edu/reedyc/AdaResources/bookhtml/contents.htm)
 * [Ada Distilled](http://www.adapower.com/pdfs/AdaDistilled07-27-2003.pdf) (PDF)
-* [Ada for Software Engineers](http://www.adapower.com/pdfs/AdaDistilled07-27-2003.pdf) (PDF)
+* [Ada for Software Engineers](http://pnyf.inf.elte.hu/kto/oktatas/ada/books/ase.pdf) (PDF)
 
 
 ###Android