diff --git a/blog/page/set-up-gdb.md b/blog/page/set-up-gdb.md
index 62ec05d8..177a46cd 100644
--- a/blog/page/set-up-gdb.md
+++ b/blog/page/set-up-gdb.md
@@ -71,4 +71,4 @@ After connecting to QEMU, you can use various gdb commands to control execution
 Of course there are many more commands. Feel free to send a PR if you think this list is missing something important. For a more complete GDB overview, check out [Beej's Quick Guide][bggdb] or the [website for Harvard's CS161 course][CS161].
 
 [bggdb]: http://beej.us/guide/bggdb/
-[CS161]: http://www.eecs.harvard.edu/~margo/cs161/resources/gdb.html
+[CS161]: http://www.eecs.harvard.edu/~cs161/resources/gdb.html