diff --git a/app/Media/MSVideo.php b/app/Media/MSVideo.php
index f648fc2..1963248 100644
--- a/app/Media/MSVideo.php
+++ b/app/Media/MSVideo.php
@@ -156,7 +156,7 @@ class MSVideo extends Base
 				$header['name'] = 'RLIST';
 
 			// Load our class for this supplier
-			$class = $class_prefix.$header['name'];
+			$class = $class_prefix.strtolower($header['name']);
 
 			$data = $bytes
 				? substr($bytes,$rp,$header['size'])
diff --git a/app/Media/MSVideo/Containers/rlist.php b/app/Media/MSVideo/Containers/rlist.php
index 787045b..4d839ce 100644
--- a/app/Media/MSVideo/Containers/rlist.php
+++ b/app/Media/MSVideo/Containers/rlist.php
@@ -59,7 +59,7 @@ class rlist extends Container
 					if ($header['name'] === 'LIST')
 						$header['name'] = 'RLIST';
 
-					$class = self::container_classes.$header['name'];
+					$class = self::container_classes.strtolower($header['name']);
 
 					$data = $bytes
 						? substr($bytes,$rp,$header['size'])
diff --git a/app/Media/QuickTime/FindQuicktimeAtoms.php b/app/Media/QuickTime/FindQuicktimeAtoms.php
index c2473cb..bdb1245 100644
--- a/app/Media/QuickTime/FindQuicktimeAtoms.php
+++ b/app/Media/QuickTime/FindQuicktimeAtoms.php
@@ -39,7 +39,7 @@ trait FindQuicktimeAtoms
 			}
 
 			// Load our class for this supplier
-			$class = $class_prefix.$header['atom'];
+			$class = $class_prefix.strtolower($header['atom']);
 
 			$data = $atom
 				? substr($atom,$rp,$header['size']-$prelude)