diff --git a/test_old/run.php b/test_old/run.php
index a5bd00b..dd5ea7e 100644
--- a/test_old/run.php
+++ b/test_old/run.php
@@ -100,6 +100,8 @@ switch ($testType) {
 | Zend.tests.multibyte.multibyte_encoding_005
 # invalid code due to missing WS after opening tag
 | tests.run-test.bug75042-3
+# contains invalid chars, which we treat as parse error
+| Zend.tests.warning_during_heredoc_scan_ahead
 # pretty print difference due to INF vs 1e1000
 | ext.standard.tests.general_functions.bug27678
 | tests.lang.bug24640