diff --git a/t/002-content.t b/t/002-content.t
index 66ab5df9..706083a2 100644
--- a/t/002-content.t
+++ b/t/002-content.t
@@ -76,8 +76,8 @@ Yay! 123
 GET /lua
 --- response_body_like: 500 Internal Server Error
 --- error_code: 500
---- error_log
-content_by_lua(nginx.conf:39):1: attempt to call field 'echo' (a nil value)
+--- error_log eval
+qr/content_by_lua\(nginx\.conf:\d+\):1: attempt to call field 'echo' \(a nil value\)/
 
 
 
diff --git a/t/082-body-filter.t b/t/082-body-filter.t
index c6c70f20..3f7b6da8 100644
--- a/t/082-body-filter.t
+++ b/t/082-body-filter.t
@@ -700,8 +700,10 @@ F(ngx_http_write_filter) {
     }
 }
 
---- stap_out eval
-("seen flush buf.\n" x 10) . "seen last buf.\n"
+--- stap_out_like eval
+qr/^(?:seen flush buf\.
+){10,}seen last buf\.
+$/
 
 --- stap2
 global active = 1