diff --git a/documentation/migration-guides/migration-5.2.rst b/documentation/migration-guides/migration-5.2.rst
index 73d52460f..99330a0b9 100644
--- a/documentation/migration-guides/migration-5.2.rst
+++ b/documentation/migration-guides/migration-5.2.rst
@@ -57,3 +57,6 @@ The following classes have been removed in this release:
 
 Miscellaneous changes
 ~~~~~~~~~~~~~~~~~~~~~
+
+- :term:`ZSTD_COMPRESSION_LEVEL` is now a plain integer number instead of a dash-prefixed 
+command-line option (e.g. it should be set to ``3`` rather than ``-3``).