diff --git a/lib/legacy.php b/lib/legacy.php
index 8aaaf03..2c70294 100755
--- a/lib/legacy.php
+++ b/lib/legacy.php
@@ -1,5 +1,8 @@
 <?php
 
+// Fix case mismatch bug on AeriaMetabox
+class_alias('AeriaMetabox','AeriaMetaBox',false);
+
 if(!function_exists('array_merge_replace')) {
 	function array_merge_replace () {
 		$arrays = func_get_args();
@@ -23,4 +26,4 @@ function array_merge_replace () {
 		}
 		return $base;
 	}
-}
\ No newline at end of file
+}