diff --git a/lib/FilesHooks.php b/lib/FilesHooks.php
index db42a7660..f0ec671fc 100755
--- a/lib/FilesHooks.php
+++ b/lib/FilesHooks.php
@@ -221,6 +221,11 @@ protected function addNotificationsForFileAction($filePath, $activityType, $subj
 			return;
 		}
 
+		// don't add activities for files in the hidden folder
+		if (Filesystem::isPathHidden($filePath)) {
+			return;
+		}
+
 		[$filePath, $uidOwner, $fileId] = $this->getSourcePathAndOwner($filePath);
 		if ($fileId === 0) {
 			// Could not find the file for the owner ...