diff --git a/apps/files_external/lib/Lib/Storage/SMB.php b/apps/files_external/lib/Lib/Storage/SMB.php
index 8b367ca451119..a646345cc69f2 100644
--- a/apps/files_external/lib/Lib/Storage/SMB.php
+++ b/apps/files_external/lib/Lib/Storage/SMB.php
@@ -205,7 +205,12 @@ protected function throwUnavailable(\Exception $e) {
 	 * @return ACL|null
 	 */
 	private function getACL(IFileInfo $file): ?ACL {
-		$acls = $file->getAcls();
+		try {
+			$acls = $file->getAcls();
+		} catch (Exception $e) {
+			$this->logger->error('Error while getting file acls', ['exception' => $e]);
+			return null;
+		}
 		foreach ($acls as $user => $acl) {
 			[, $user] = $this->splitUser($user); // strip domain
 			if ($user === $this->server->getAuth()->getUsername()) {