diff --git a/test/test_rake_clean.rb b/test/test_rake_clean.rb
index dffab932d..654b95258 100644
--- a/test/test_rake_clean.rb
+++ b/test/test_rake_clean.rb
@@ -40,11 +40,20 @@ def test_cleanup_ignores_missing_files
   def test_cleanup_trace
     file_name = create_file
 
-    assert_output "", "rm -r #{file_name}\n" do
+    out, err = capture_io do
       with_trace true do
         Rake::Cleaner.cleanup(file_name)
       end
     end
+
+    if err == ""
+      # Current FileUtils
+      assert_equal "rm -r #{file_name}\n", out
+    else
+      # Old FileUtils
+      assert_equal "", out
+      assert_equal "rm -r #{file_name}\n", err
+    end
   end
 
   def test_cleanup_without_trace
@@ -70,11 +79,18 @@ def test_cleanup_opt_overrides_trace_silent
   def test_cleanup_opt_overrides_trace_verbose
     file_name = create_file
 
-    assert_output "", "rm -r #{file_name}\n" do
+    out, err = capture_io do
       with_trace false do
         Rake::Cleaner.cleanup(file_name, verbose: true)
       end
     end
+
+    if err == ""
+      assert_equal "rm -r #{file_name}\n", out
+    else
+      assert_equal "", out
+      assert_equal "rm -r #{file_name}\n", err
+    end
   end
 
   private