diff --git a/3rdparty b/3rdparty
index 2fa8874509eeb..70082d0507b94 160000
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 2fa8874509eebddd763d530c85d05a37aadf2e07
+Subproject commit 70082d0507b9479135d1c0157d6c9c2281efb5a8
diff --git a/lib/private/Files/Stream/Encryption.php b/lib/private/Files/Stream/Encryption.php
index fc75ead1e45b4..014f752a162bd 100644
--- a/lib/private/Files/Stream/Encryption.php
+++ b/lib/private/Files/Stream/Encryption.php
@@ -524,7 +524,7 @@ protected function readCache() {
 	/**
 	 * write header at beginning of encrypted file
 	 *
-	 * @return integer
+	 * @return int|false
 	 * @throws EncryptionHeaderKeyExistsException if header key is already in use
 	 */
 	protected function writeHeader() {