diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 000000000..aa01db268
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,6 @@
+
+Master branch
+=============
+
+- [report activity count] fix error: do not show centers which are not selected in results.
+
diff --git a/Export/Export/CountActivity.php b/Export/Export/CountActivity.php
index cdab3dd74..00f741fce 100644
--- a/Export/Export/CountActivity.php
+++ b/Export/Export/CountActivity.php
@@ -69,6 +69,7 @@ class CountActivity implements ExportInterface
     public function initiateQuery(array $requiredModifiers,  array $acl, array $data = array())
     {
         $qb = $this->entityManager->createQueryBuilder();
+        $centers = array_map(function($el) { return $el['center']; }, $acl);
         
         $qb->select('COUNT(activity.id) as export_count_activity')
                 ->from('ChillActivityBundle:Activity', 'activity')
@@ -78,6 +79,10 @@ class CountActivity implements ExportInterface
             $qb->join('activity.person', 'person');
         }
         
+        $qb->where($qb->expr()->in('person.center', ':centers'))
+            ->setParameter('centers', $centers)
+            ;
+        
         return $qb;
     }