diff --git a/languages/C/README.md b/languages/C/README.md
index ad85411..78e0923 100644
--- a/languages/C/README.md
+++ b/languages/C/README.md
@@ -1,3 +1,3 @@
 # C
 
-* [The Development of the C Language-Original](https://heim.ifi.uio.no/inf2270/programmer/historien-om-C.pdf)
+* [The Development of the C Language-Original](https://www.bell-labs.com/usr/dmr/www/chist.pdf)