diff --git a/pages/common/while.md b/pages/common/while.md
index 67cde5af7..60ae66b02 100644
--- a/pages/common/while.md
+++ b/pages/common/while.md
@@ -1,7 +1,7 @@
 # while
 
 > Simple shell loop.
-> More information: <https://manned.org/while>.
+> More information: <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_04_09>.
 
 - Read `stdin` and perform an action on every line: