diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4b90447..7ef8ce42 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ Change Log / Ray Tracing in One Weekend
 
 ### In One Weekend
   - Fix    -- Fix equation for refracted rays of non-unit length (#1644)
+  - Fix    -- Typo "trigonometric qualities" -> "trigonometric identities"
 
 ### The Next Week