diff --git a/amm/util/src/main/scala/ammonite/util/Imports.scala b/amm/util/src/main/scala/ammonite/util/Imports.scala
index cd2d8caf7..69f6e7721 100644
--- a/amm/util/src/main/scala/ammonite/util/Imports.scala
+++ b/amm/util/src/main/scala/ammonite/util/Imports.scala
@@ -55,10 +55,10 @@ case class ImportData(fromName: Name,
 
 
 object ImportData{
-  sealed case class ImportType(name: String)
-  val Type = ImportType("Type")
-  val Term = ImportType("Term")
-  val TermType = ImportType("TermType")
+  sealed abstract class ImportType(val name: String) extends Product with Serializable
+  case object Type extends ImportType("Type")
+  case object Term extends ImportType("Term")
+  case object TermType extends ImportType("TermType")
 
   def apply(name: String, importType: ImportType = Term): Seq[ImportData] = {
     val elements = name.split('.')