diff --git a/apps/files_sharing/lib/updater.php b/apps/files_sharing/lib/updater.php
index af6f921559..a41ce76f93 100644
--- a/apps/files_sharing/lib/updater.php
+++ b/apps/files_sharing/lib/updater.php
@@ -43,11 +43,11 @@ class Shared_Updater {
 				}
 			}
 			// Correct folders of shared file owner
+			$target = substr($target, 8);
 			if ($uidOwner !== $uid && $source = \OC_Share_Backend_File::getSource($target)) {
-				\OC\Files\Filesystem::initMountPoints($source['uid_owner']);
-				$source = '/'.$source['uid_owner'].'/'.$source['path'];
-				$mtime = \OC\Files\Filesystem::filemtime($target);
-				\OC\Files\Cache\Updater::correctFolder($source, $mtime);
+				\OC\Files\Filesystem::initMountPoints($uidOwner);
+				$source = '/'.$uidOwner.'/'.$source['path'];
+				\OC\Files\Cache\Updater::correctFolder($source, $info['mtime']);
 			}
 		}
 	}