diff --git a/sample/test.rb b/sample/test.rb
index 7d4c2f9584..62e9a3b7e9 100644
--- a/sample/test.rb
+++ b/sample/test.rb
@@ -961,7 +961,7 @@ end
 m{p 'test'}
 
 def m
-  test_ok(block_given?,&proc)
+  test_ok(block_given?,&proc{})
 end
 m{p 'test'}