diff --git a/books/free-programming-books-subjects.md b/books/free-programming-books-subjects.md
index 56f23abb6..1ab0b5657 100644
--- a/books/free-programming-books-subjects.md
+++ b/books/free-programming-books-subjects.md
@@ -853,7 +853,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Domain-Driven Design Reference](https://www.domainlanguage.com/ddd/reference) - Eric Evans
 * [DSL Engineering: Designing, Implementing and Using Domain-Specific Languages](http://dslbook.org) - Markus Voelter
 * [Exploring CQRS and Event Sourcing](https://docs.microsoft.com/en-us/previous-versions/msp-n-p/jj554200(v=pandp.10)) - Dominic Betts, Julián Domínguez, Grigori Melnik, Mani Subramanian, Fernando Simonazzi ([EPUB, PDF](http://www.microsoft.com/en-us/download/details.aspx?id=34774) - [code samples](http://go.microsoft.com/fwlink/p/?linkid=258571))
-* [Guide to the Software Engineering Body of Knowledge](https://www.computer.org/education/bodies-of-knowledge/software-engineering/v3) (email adddress *requested*)
+* [Guide to the Software Engineering Body of Knowledge](https://www.computer.org/education/bodies-of-knowledge/software-engineering/v3) (email address *requested*)
 * [How to Design Programs](http://www.htdp.org)
 * [How to Write Unmaintainable Code](http://mindprod.com/jgloss/unmain.html)
 * [Kanban and Scrum - making the most of both](http://www.infoq.com/minibooks/kanban-scrum-minibook)