diff --git a/t/008-log.t b/t/008-log.t
index 2c4e3058..cc9bf48f 100644
--- a/t/008-log.t
+++ b/t/008-log.t
@@ -961,5 +961,5 @@ GET /test_nginx_debug_log
 --- error_code: 200
 --- error_log eval
 [
-   qr/[debug] .*: .* http finalize request: 200, "/test_nginx_debug_log?" a:1, c:1/,
+   qr/\[debug\] .*: .* http finalize request: 200, "\/test_nginx_debug_log\?" a:1, c:1/,
 ]