diff --git a/public/scala/src/org/broadinstitute/sting/queue/QScript.scala b/public/scala/src/org/broadinstitute/sting/queue/QScript.scala
index 1c48e3bc7..fc1d4599e 100644
--- a/public/scala/src/org/broadinstitute/sting/queue/QScript.scala
+++ b/public/scala/src/org/broadinstitute/sting/queue/QScript.scala
@@ -105,7 +105,7 @@ trait QScript extends Logging with PrimitiveOptionConversions with StringFileCon
     this.functions ++= functions
   }
 
-  def addAll(functions: Seq[QFunction]) {
+  def addAll(functions: Traversable[QFunction]) {
     functions.foreach( f => add(f) )
   }