diff --git a/test/command/test_fluentd.rb b/test/command/test_fluentd.rb
index d73f0dd1af..60e0b131ed 100644
--- a/test/command/test_fluentd.rb
+++ b/test/command/test_fluentd.rb
@@ -570,7 +570,7 @@ def assert_fluentd_fails_to_start(cmdline, *pattern_list, timeout: 20)
 
       assert_fluentd_fails_to_start(
         create_cmdline(conf_path, "-p", File.dirname(plugin_path)),
-        "in_buggy.rb:5: syntax error, unexpected end-of-input"
+        /in_buggy.rb:\d+:.+\(SyntaxError\)/
       )
     end
   end