diff --git a/run-tests.php b/run-tests.php
index a2f552cfd49..08df7ca7091 100755
--- a/run-tests.php
+++ b/run-tests.php
@@ -240,6 +240,7 @@ $ini_overwrites = array(
 		'ignore_repeated_errors=0',
 		'precision=14',
 		'memory_limit=128M',
+		'log_errors_max_len=0',
 	);
 
 function write_information($show_html)