1 files changed, 1 insertions, 1 deletions
diff --git a/test/benchmark/test_benchmark.rb b/test/benchmark/test_benchmark.rb
index e3305aa0ba..8e369fdb1f 100644
--- a/test/benchmark/test_benchmark.rb
+++ b/test/benchmark/test_benchmark.rb
@@ -123,7 +123,7 @@ describe Benchmark do
     it '[ruby-dev:40906] can add in-place the time of execution of the block given' do
       t = Benchmark::Tms.new
       t.real.must_equal 0
-      t.add! {}
+      t.add! { sleep 0.1 }
       t.real.wont_equal 0
     end
   end