diff --git a/railties/lib/rails/test_unit/minitest_plugin.rb b/railties/lib/rails/test_unit/minitest_plugin.rb
index 8decdb0f4f..7a852d1109 100644
--- a/railties/lib/rails/test_unit/minitest_plugin.rb
+++ b/railties/lib/rails/test_unit/minitest_plugin.rb
@@ -6,7 +6,7 @@ require "shellwords"
 module Minitest
   class SuppressedSummaryReporter < SummaryReporter
     # Disable extra failure output after a run if output is inline.
-    def aggregated_results
+    def aggregated_results(*)
       super unless options[:output_inline]
     end
   end