diff --git a/ext/opcache/tests/zzz_basic_logging.phpt b/ext/opcache/tests/zzz_basic_logging.phpt
index d374daa67ba..88290f6a169 100644
--- a/ext/opcache/tests/zzz_basic_logging.phpt
+++ b/ext/opcache/tests/zzz_basic_logging.phpt
@@ -13,6 +13,7 @@ opcache.log_verbosity_level=4
 opcache.huge_code_pages=0
 opcache.preload=
 opcache.interned_strings_buffer=8
+opcache.blacklist_filename=
 --EXTENSIONS--
 opcache
 --SKIPIF--