diff --git a/compile/inc/src/main/scala/sbt/inc/IncOptions.scala b/compile/inc/src/main/scala/sbt/inc/IncOptions.scala
index b2a147b98..b38fed952 100644
--- a/compile/inc/src/main/scala/sbt/inc/IncOptions.scala
+++ b/compile/inc/src/main/scala/sbt/inc/IncOptions.scala
@@ -217,7 +217,7 @@ final class IncOptions(
 
 object IncOptions extends Serializable {
   private val recompileOnMacroDefDefault: Boolean = true
-  private val nameHashingDefault: Boolean = true
+  private[sbt] val nameHashingDefault: Boolean = true
   private val antStyleDefault: Boolean = false
   val Default = IncOptions(
     //    1. recompile changed sources
diff --git a/compile/inc/src/main/scala/sbt/inc/Relations.scala b/compile/inc/src/main/scala/sbt/inc/Relations.scala
index a42794eb6..f244c431f 100644
--- a/compile/inc/src/main/scala/sbt/inc/Relations.scala
+++ b/compile/inc/src/main/scala/sbt/inc/Relations.scala
@@ -227,7 +227,7 @@ object Relations {
 
   def emptySource: Source = es
   private[inc] lazy val emptySourceDependencies: SourceDependencies = new SourceDependencies(e, estr)
-  def empty: Relations = empty(nameHashing = false)
+  def empty: Relations = empty(nameHashing = IncOptions.nameHashingDefault)
   private[inc] def empty(nameHashing: Boolean): Relations =
     if (nameHashing)
       new MRelationsNameHashing(e, e, emptySourceDependencies, emptySourceDependencies, estr, estr)