diff --git a/documentation/migration-guides/migration-5.2.rst b/documentation/migration-guides/migration-5.2.rst
index cb70e19da..2ae8e73a7 100644
--- a/documentation/migration-guides/migration-5.2.rst
+++ b/documentation/migration-guides/migration-5.2.rst
@@ -74,6 +74,25 @@ systemd changes
    As a consequence, the ``systemd`` recipe no longer contains the ``usrmerge``
    :term:`PACKAGECONFIG` option as it is now implied by default.
 
+-  ``systemd.bbclass``: If a systemd service file had referred to other service
+   files by starting them as “Also”, the other service files were automatically added
+   to the ``FILES`` variable of the same package. Example: 
+
+   a.service contains:
+
+   .. code-block:: ini
+
+      [Install]
+      Also=b.service
+
+   If a.service is packed in package A, b.service is automatically packed
+   into package A as well. This happens even if b.service is explicitly
+   added to package B using FILES and SYSTEMD_SERVICE variables.
+
+   This prevents such services from being packaged into different packages.
+   Therefore, this automatic has been removed for service files (but not for socket files).
+   Now all service files must be explicitly added to ``FILES``.
+
 Recipe changes
 ~~~~~~~~~~~~~~