diff --git a/lib/private/Log.php b/lib/private/Log.php
index 04148d549d6bc3ad53bbb3780d96bc5f53615e68..da29c351185709328185c8bf108992ffea199d49 100644
--- a/lib/private/Log.php
+++ b/lib/private/Log.php
@@ -324,7 +324,7 @@ class Log implements ILogger {
 		try {
 			if ($level >= $minLevel) {
 				if (!$this->logger instanceof IFileBased) {
-					$data = json_encode($data, JSON_PARTIAL_OUTPUT_ON_ERROR);
+					$data = json_encode($data, JSON_PARTIAL_OUTPUT_ON_ERROR | JSON_UNESCAPED_SLASHES);
 				}
 				$this->writeLog($app, $data, $level);
 			}