1 files changed, 7 insertions, 2 deletions
diff --git a/src/main/scala/chisel3/aop/Select.scala b/src/main/scala/chisel3/aop/Select.scala
index b9ad808b..a16c415c 100644
--- a/src/main/scala/chisel3/aop/Select.scala
+++ b/src/main/scala/chisel3/aop/Select.scala
@@ -6,6 +6,7 @@ import chisel3._
 import chisel3.experimental.{BaseModule, FixedPoint}
 import chisel3.internal.HasId
 import chisel3.internal.firrtl._
+import chisel3.internal.BaseModule.ModuleClone
 import firrtl.annotations.ReferenceTarget
 
 import scala.collection.mutable
@@ -81,8 +82,12 @@ object Select {
   def instances(module: BaseModule): Seq[BaseModule] = {
     check(module)
     module._component.get match {
-      case d: DefModule => d.commands.collect {
-        case i: DefInstance => i.id
+      case d: DefModule => d.commands.flatMap {
+        case i: DefInstance => i.id match {
+          case _: ModuleClone => None
+          case other          => Some(other)
+        }
+        case _ => None
       }
       case other => Nil
     }