diff --git a/libraries/src/Filesystem/Streams/StreamString.php b/libraries/src/Filesystem/Streams/StreamString.php
index 4e8747981775c..3bf16c2632d12 100644
--- a/libraries/src/Filesystem/Streams/StreamString.php
+++ b/libraries/src/Filesystem/Streams/StreamString.php
@@ -10,7 +10,7 @@
 
 \defined('JPATH_PLATFORM') or die;
 
-use Joomla\CMS\Filesystem\Support\Stringcontroller;
+use Joomla\CMS\Filesystem\Support\StringController;
 
 /**
  * String Stream Wrapper
diff --git a/libraries/src/Filesystem/Support/Stringcontroller.php b/libraries/src/Filesystem/Support/StringController.php
similarity index 100%
rename from libraries/src/Filesystem/Support/Stringcontroller.php
rename to libraries/src/Filesystem/Support/StringController.php
diff --git a/libraries/src/Form/Rule/SubFormRule.php b/libraries/src/Form/Rule/SubformRule.php
similarity index 100%
rename from libraries/src/Form/Rule/SubFormRule.php
rename to libraries/src/Form/Rule/SubformRule.php