diff --git a/docs/src/whatsnew/latest.rst b/docs/src/whatsnew/latest.rst
index b1041ef7a1..db6f8d34f0 100644
--- a/docs/src/whatsnew/latest.rst
+++ b/docs/src/whatsnew/latest.rst
@@ -105,7 +105,7 @@ This document explains the changes made to Iris for this release
    environment info. (:pull:`3990`)
 
 #. `@akuhnregnier`_ replaced `deprecated numpy 1.20 aliases for builtin types`_.
-   (:pull:`3997:`)
+   (:pull:`3997`)
 
 .. comment
     Whatsnew author names (@github name) in alphabetical order. Note that,