1 files changed, 1 insertions, 1 deletions
diff --git a/test/files/pos/MailBox.scala b/test/files/pos/MailBox.scala
index e081735911..9094b73399 100644
--- a/test/files/pos/MailBox.scala
+++ b/test/files/pos/MailBox.scala
@@ -8,7 +8,7 @@ class MailBox with Monitor {
     var next: LinkedList[a] = null;
   }
 
-  def insert(l: LinkedList[a], x: a): LinkedList[a] {
+  def insert[a](l: LinkedList[a], x: a): LinkedList[a] = {
     l.next = new LinkedList[a];
     l.next.elem = x;
     l.next.next = l.next;