diff --git a/libraries/src/Log/Log.php b/libraries/src/Log/Log.php
index 247d5eda433ea..858bd9166119e 100644
--- a/libraries/src/Log/Log.php
+++ b/libraries/src/Log/Log.php
@@ -443,7 +443,7 @@ public static function deprecated($entry)
 
 		try
 		{
-			self::add($entry, Log::WARNING, 'deprecated');
+			self::add($entry, self::WARNING, 'deprecated');
 		}
 		catch (\Exception $e)
 		{