diff --git a/doc/changelog/03-notations/17988-master+fix17963-search-anomaly-with-evars.rst b/doc/changelog/03-notations/17988-master+fix17963-search-anomaly-with-evars.rst
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+- **Added:**
+  Declaring more than once the level of a notation variable is now an error
+  (`#17988 <https://github.com/coq/coq/pull/17988>`_,
+  fixes `#17985 <https://github.com/coq/coq/issues/17985>`_,
+  by Hugo Herbelin).