diff --git a/lib/private/Files/Storage/Wrapper/Jail.php b/lib/private/Files/Storage/Wrapper/Jail.php
index 619d8b07137c8..5393d732a5e71 100644
--- a/lib/private/Files/Storage/Wrapper/Jail.php
+++ b/lib/private/Files/Storage/Wrapper/Jail.php
@@ -108,7 +108,7 @@ public function rmdir($path) {
 	 * see https://www.php.net/manual/en/function.opendir.php
 	 *
 	 * @param string $path
-	 * @return resource|false
+	 * @return resource|bool
 	 */
 	public function opendir($path) {
 		return $this->getWrapperStorage()->opendir($this->getUnjailedPath($path));
diff --git a/lib/private/Files/Storage/Wrapper/Wrapper.php b/lib/private/Files/Storage/Wrapper/Wrapper.php
index 28a1e0b1e4da5..ef91e27cf8819 100644
--- a/lib/private/Files/Storage/Wrapper/Wrapper.php
+++ b/lib/private/Files/Storage/Wrapper/Wrapper.php
@@ -98,7 +98,7 @@ public function rmdir($path) {
 	 * see https://www.php.net/manual/en/function.opendir.php
 	 *
 	 * @param string $path
-	 * @return resource|false
+	 * @return resource|bool
 	 */
 	public function opendir($path) {
 		return $this->getWrapperStorage()->opendir($path);
diff --git a/lib/public/Files/Storage.php b/lib/public/Files/Storage.php
index c165266a1b72a..2535e249b04c5 100644
--- a/lib/public/Files/Storage.php
+++ b/lib/public/Files/Storage.php
@@ -88,7 +88,7 @@ public function rmdir($path);
 	 * see https://www.php.net/manual/en/function.opendir.php
 	 *
 	 * @param string $path
-	 * @return resource|false
+	 * @return resource|bool
 	 * @since 6.0.0
 	 */
 	public function opendir($path);
diff --git a/lib/public/Files/Storage/IStorage.php b/lib/public/Files/Storage/IStorage.php
index 2f38165830bbe..0fc42ab56cf86 100644
--- a/lib/public/Files/Storage/IStorage.php
+++ b/lib/public/Files/Storage/IStorage.php
@@ -85,7 +85,7 @@ public function rmdir($path);
 	 * see https://www.php.net/manual/en/function.opendir.php
 	 *
 	 * @param string $path
-	 * @return resource|false
+	 * @return resource|bool
 	 * @since 9.0.0
 	 */
 	public function opendir($path);