diff --git a/src/Processor/CostTimeProcessor.php b/src/Processor/CostTimeProcessor.php
index 3285a31..bd09622 100644
--- a/src/Processor/CostTimeProcessor.php
+++ b/src/Processor/CostTimeProcessor.php
@@ -26,7 +26,7 @@ public function __invoke(array $record)
 
         $cost    = 0;
         $name    = $record['channel'];
-        $hash    = md5(var_export($record, true));
+        $hash    = md5(print_r($record, true));
         $current = microtime(true);
 
         if (! isset(self::$points[$name])) {