diff --git a/ChangeLog.d/base64-ranges.txt b/ChangeLog.d/base64-ranges.txt
index 8ffba2d..e3f3862 100644
--- a/ChangeLog.d/base64-ranges.txt
+++ b/ChangeLog.d/base64-ranges.txt
@@ -1,4 +1,4 @@
 Changes
    * Improve the performance of base64 constant-flow code. The result is still
      slower than the original non-constant-flow implementation, but much faster
-     than the previous constant-flow implemenation. Fixes #4814.
+     than the previous constant-flow implementation. Fixes #4814.