diff --git a/free-programming-books.md b/free-programming-books.md
index abd631b6d..ef34bf6a9 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -726,7 +726,7 @@
 ### Assembly Language
 
 * [An introduction to reverse engineering for beginners](https://github.com/dennis714/RE-for-beginners)
-* [Assembly Language Succinctly](https://www.syncfusion.com/Account/Logon?ReturnUrl=/resources/techportal/ebooks/assemblylanguage) (PDF)
+* [Assembly Language Succinctly](https://www.syncfusion.com/resources/techportal/details/ebooks/assemblylanguage) (PDF)
 * [PC Assembly Language](http://drpaulcarter.com/pcasm/) - P. A. Carter
 * [Professional Assembly Language](http://blog.hit.edu.cn/jsx/upload/AT%EF%BC%86TAssemblyLanguage.pdf) (PDF)
 * [Programming from the Ground Up](http://mirror.unicorncloud.org/savannah-nongnu//pgubook/ProgrammingGroundUp-1-0-booksize.pdf) (PDF)