diff --git a/core/Log/Message.php b/core/Log/Message.php
index a52c09b14372a6125d98a5e558d84fe4efb2810f..23a6777e6907b3cc2d42c08b5853d1e25cd8e095 100644
--- a/core/Log/Message.php
+++ b/core/Log/Message.php
@@ -26,7 +26,10 @@ class Piwik_Log_Message extends Piwik_Log
 	{
 		$logToFileFilename = self::ID.".htm";
 		$logToDatabaseTableName = self::ID;
-		$logToDatabaseColumnMapping = null;
+		$logToDatabaseColumnMapping = array(
+			'message' => 'message',
+			'timestamp' => 'timestamp'
+		);
 		$screenFormatter = new Piwik_Log_Message_Formatter_ScreenFormatter();
 		$fileFormatter = new Piwik_Log_Formatter_FileFormatter();