1 files changed, 2 insertions, 2 deletions
diff --git a/core/src/main/scala/chisel3/internal/firrtl/IR.scala b/core/src/main/scala/chisel3/internal/firrtl/IR.scala
index 44fdb833..1783f68f 100644
--- a/core/src/main/scala/chisel3/internal/firrtl/IR.scala
+++ b/core/src/main/scala/chisel3/internal/firrtl/IR.scala
@@ -72,11 +72,11 @@ abstract class Arg {
 case class Node(id: HasId) extends Arg {
   override def fullName(ctx: Component): String = id.getOptionRef match {
     case Some(arg) => arg.fullName(ctx)
-    case None => id.suggestedName.getOrElse("??")
+    case None => id.instanceName
   }
   def name: String = id.getOptionRef match {
     case Some(arg) => arg.name
-    case None => id.suggestedName.getOrElse("??")
+    case None => id.instanceName
   }
 }