diff --git a/benchmarks/Lexer.php b/benchmarks/Lexer.php
index da112fe4..d515a230 100644
--- a/benchmarks/Lexer.php
+++ b/benchmarks/Lexer.php
@@ -3,7 +3,7 @@
 // emulates inserting a dir called HTMLPurifier into your class dir
 set_include_path(get_include_path() . PATH_SEPARATOR . '../library/');
 
-require_once 'HTMLPurifier/ConfigDef.php';
+require_once 'HTMLPurifier/ConfigSchema.php';
 require_once 'HTMLPurifier/Config.php';
 require_once 'HTMLPurifier/Lexer/DirectLex.php';
 require_once 'HTMLPurifier/Lexer/PEARSax3.php';
diff --git a/benchmarks/ProfileDirectLex.php b/benchmarks/ProfileDirectLex.php
index 175d2894..faf9bef5 100644
--- a/benchmarks/ProfileDirectLex.php
+++ b/benchmarks/ProfileDirectLex.php
@@ -2,7 +2,7 @@
 
 set_include_path(get_include_path() . PATH_SEPARATOR . '../library/');
 
-require_once 'HTMLPurifier/ConfigDef.php';
+require_once 'HTMLPurifier/ConfigSchema.php';
 require_once 'HTMLPurifier/Config.php';
 require_once 'HTMLPurifier/Lexer/DirectLex.php';