diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 43b81f3f26..7801c48aa7 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -4196,7 +4196,7 @@ function msg_handler($errno, $msg_text, $errfile, $errline)
 				$msg_text = $log_text;
 			}
 
-			if ((defined('DEBUG') || defined('IN_CRON') || defined('IMAGE_OUTPUT')) && isset($db))
+			if ((defined('IN_CRON') || defined('IMAGE_OUTPUT')) && isset($db))
 			{
 				// let's avoid loops
 				$db->sql_return_on_error(true);