diff --git a/kiri-engine/Abstracts/Logger.php b/kiri-engine/Abstracts/Logger.php
index 48cfd0d7..c8e5c180 100644
--- a/kiri-engine/Abstracts/Logger.php
+++ b/kiri-engine/Abstracts/Logger.php
@@ -222,7 +222,7 @@ class Logger implements LoggerInterface
 	private function _string($message, $context): string
 	{
 		if (!empty($context)) {
-			return $message . ' ' . PHP_EOL . print_r($context, TRUE) . PHP_EOL;
+			return $message . ' ' . PHP_EOL . json_encode($context, JSON_FORCE_OBJECT) . PHP_EOL;
 		}
 		return $message . PHP_EOL;
 	}