src/Pure/Concurrent/future.scala

--- a/src/Pure/Concurrent/future.scala	Tue Apr 22 23:49:15 2014 +0200
+++ b/src/Pure/Concurrent/future.scala	Tue Apr 22 23:57:17 2014 +0200
@@ -68,7 +68,7 @@
     Exn.release {
       peek match {
         case Some(res) => res
-        case None => (evaluator !? ()).asInstanceOf[Exn.Result[A]]
+        case None => (evaluator !? (())).asInstanceOf[Exn.Result[A]]
       }
     }
 }