diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e41ab481e89ceaf60c45578b753a9de009d818e..77e1cf45fbac7c8a87e7b66172bf569005ab0e7e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,7 @@ Changes in and extensions of the theory:
 * [#] Change in the definition of WP, so that there is a fancy update between
   the quantification over the next states and the later modality. This makes it
   possible to prove more powerful lifting lemmas: The new versions feature an
-  "update that take a step".
+  "update that takes a step".
 * [#] Add weakest preconditions for total program correctness.
 * [#] "(Potentially) stuck" weakest preconditions are no longer considered
   experimental.