diff --git a/lib/private/Archive/Archive.php b/lib/private/Archive/Archive.php
index 633e5e8ab0e33..20d56e50e765b 100644
--- a/lib/private/Archive/Archive.php
+++ b/lib/private/Archive/Archive.php
@@ -113,7 +113,7 @@ abstract public function remove($path);
 	 * get a file handler
 	 * @param string $path
 	 * @param string $mode
-	 * @return resource
+	 * @return bool|resource
 	 */
 	abstract public function getStream($path, $mode);
 	/**
diff --git a/lib/private/Archive/TAR.php b/lib/private/Archive/TAR.php
index a9dd28b389b93..f68813752cc0f 100644
--- a/lib/private/Archive/TAR.php
+++ b/lib/private/Archive/TAR.php
@@ -339,7 +339,7 @@ public function remove($path) {
 	 *
 	 * @param string $path
 	 * @param string $mode
-	 * @return resource
+	 * @return bool|resource
 	 */
 	public function getStream($path, $mode) {
 		if (strrpos($path, '.') !== false) {
diff --git a/lib/private/Archive/ZIP.php b/lib/private/Archive/ZIP.php
index fd34f4d4ceaa6..96894bac6e950 100644
--- a/lib/private/Archive/ZIP.php
+++ b/lib/private/Archive/ZIP.php
@@ -187,7 +187,7 @@ public function remove($path) {
 	 * get a file handler
 	 * @param string $path
 	 * @param string $mode
-	 * @return resource
+	 * @return bool|resource
 	 */
 	public function getStream($path, $mode) {
 		if ($mode == 'r' or $mode == 'rb') {