diff --git a/test/minitest/test_minitest_mock.rb b/test/minitest/test_minitest_mock.rb
index 57307693..c7bbf4ba 100644
--- a/test/minitest/test_minitest_mock.rb
+++ b/test/minitest/test_minitest_mock.rb
@@ -315,22 +315,22 @@ def test_stub_private_module_method
   def test_stub_private_module_method_indirect
     @assertion_count += 1
 
-    slow_clapper = Class.new do
-      def slow_clap
-        sleep 3
+    fail_clapper = Class.new do
+      def fail_clap
+        fail
         :clap
       end
     end.new
 
-    slow_clapper.stub :sleep, nil do |fast_clapper|
-      @tc.assert_equal :clap, fast_clapper.slow_clap # either form works
-      @tc.assert_equal :clap, slow_clapper.slow_clap # yay closures
+    fail_clapper.stub :fail, nil do |safe_clapper|
+      @tc.assert_equal :clap, safe_clapper.fail_clap # either form works
+      @tc.assert_equal :clap, fail_clapper.fail_clap # yay closures
     end
   end
 
   def test_stub_public_module_method
-    Math.stub(:log10, 42.0) do
-      @tc.assert_in_delta 42.0, Math.log10(1000)
+    Math.stub :log10, :stubbed do
+      @tc.assert_equal :stubbed, Math.log10(1000)
     end
   end