get tester working again with new firrtl debug names

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/scala/Core.scala b/src/main/scala/Core.scala
index 3aee62b6..418ced27 100644
--- a/src/main/scala/Core.scala
+++ b/src/main/scala/Core.scala
@@ -197,7 +197,7 @@ case class Slot(val imm: Immediate, val name: String) extends Immediate {
 case class Index(val imm: Immediate, val value: Int) extends Immediate {
   def name = "[" + value + "]"
   def fullname = imm.fullname + "[" + value + "]"
-  override def debugName = imm.debugName + "_" + value
+  override def debugName = imm.debugName + "." + value
 }
 
 case class Port(val id: String, val dir: Direction, val kind: Kind);