diff --git a/.changes/unreleased/Fixed-20250214-121010.yaml b/.changes/unreleased/Fixed-20250214-121010.yaml
new file mode 100644
index 000000000..d7000c11c
--- /dev/null
+++ b/.changes/unreleased/Fixed-20250214-121010.yaml
@@ -0,0 +1,6 @@
+kind: Fixed
+body: fix generation of document with accompanying period context, and list of activities and works
+time: 2025-02-14T12:10:10.920355454+01:00
+custom:
+    Issue: ""
+    SchemaChange: No schema change
diff --git a/src/Bundle/ChillActivityBundle/Service/DocGenerator/ListActivitiesByAccompanyingPeriodContext.php b/src/Bundle/ChillActivityBundle/Service/DocGenerator/ListActivitiesByAccompanyingPeriodContext.php
index 56b9de408..9b473309e 100644
--- a/src/Bundle/ChillActivityBundle/Service/DocGenerator/ListActivitiesByAccompanyingPeriodContext.php
+++ b/src/Bundle/ChillActivityBundle/Service/DocGenerator/ListActivitiesByAccompanyingPeriodContext.php
@@ -143,7 +143,10 @@ class ListActivitiesByAccompanyingPeriodContext implements
             array_filter(
                 $works,
                 function ($work) use ($user) {
-                    $workUsernames = array_map(static fn (User $user) => $user['username'], $work['referrers'] ?? []);
+                    $workUsernames = [];
+                    foreach ($work['referrers'] as $referrer) {
+                        $workUsernames[] = $referrer['username'];
+                    }
 
                     return \in_array($user->getUserIdentifier(), $workUsernames, true);
                 }