diff --git a/application/Espo/Entities/Notification.php b/application/Espo/Entities/Notification.php
index 9ee3a57688..52d1e25d2f 100644
--- a/application/Espo/Entities/Notification.php
+++ b/application/Espo/Entities/Notification.php
@@ -184,4 +184,9 @@ class Notification extends Entity
     {
         return $this->get('actionId');
     }
+
+    public function setGroupedCount(?string $groupedCount): self
+    {
+        return $this->set('groupedCount', $groupedCount);
+    }
 }
diff --git a/application/Espo/Tools/Notification/RecordService.php b/application/Espo/Tools/Notification/RecordService.php
index 440fcfadd4..af2ecb5402 100644
--- a/application/Espo/Tools/Notification/RecordService.php
+++ b/application/Espo/Tools/Notification/RecordService.php
@@ -132,7 +132,7 @@ class RecordService
                 $groupedCount = $groupedCountMap[$entity->getActionId()] ?? 0;
             }
 
-            $entity->set('groupedCount', $groupedCount);
+            $entity->setGroupedCount($groupedCount);
         }
 
         $collection = new EntityCollection([...$collection], Notification::ENTITY_TYPE);