diff --git a/wp-content/db.php b/wp-content/db.php
index <HASH>..<HASH> 100644
--- a/wp-content/db.php
+++ b/wp-content/db.php
@@ -31,12 +31,10 @@ if ( defined( 'QM_DISABLED' ) and QM_DISABLED ) {
 
 # No autoloaders for us. See https://github.com/johnbillion/QueryMonitor/issues/7
 $qm_dir = dirname( dirname( __FILE__ ) );
-foreach ( array( 'Backtrace', 'Collector', 'Plugin', 'Util' ) as $qm_class ) {
-	if ( ! is_readable( $qm_file = "{$qm_dir}/classes/{$qm_class}.php" ) ) {
-		return;
-	}
-	require_once $qm_file;
+if ( ! is_readable( $backtrace = "{$qm_dir}/classes/Backtrace.php" ) ) {
+	return;
 }
+require_once $backtrace;
 
 if ( !defined( 'SAVEQUERIES' ) ) {
 	define( 'SAVEQUERIES', true );
The `db.php` file doesn't need to load all these classes.