diff --git a/mrblib/tempfile.rb b/mrblib/tempfile.rb
index 5f87863..9928e86 100644
--- a/mrblib/tempfile.rb
+++ b/mrblib/tempfile.rb
@@ -48,7 +48,7 @@ def make_tmpname(basename, tempdir, n=nil)
   end
 
   def close(real=false)
-    super
+    super()
     delete if real
 
     nil