diff --git a/main/settings/src/main/scala/sbt/Def.scala b/main/settings/src/main/scala/sbt/Def.scala
index 073505b6e..5ae4e737a 100644
--- a/main/settings/src/main/scala/sbt/Def.scala
+++ b/main/settings/src/main/scala/sbt/Def.scala
@@ -10,6 +10,8 @@ import KeyRanks.{ DTask, Invisible }
 object Def extends Init[Scope] with TaskMacroExtra {
   type Classpath = Seq[Attributed[File]]
 
+  def settings(ss: SettingsDefinition*): Seq[Setting[_]] = ss.flatMap(_.settings)
+
   val triggeredBy = AttributeKey[Seq[Task[_]]]("triggered-by")
   val runBefore = AttributeKey[Seq[Task[_]]]("run-before")
   val resolvedScoped = SettingKey[ScopedKey[_]]("resolved-scoped", "The ScopedKey for the referencing setting or task.", KeyRanks.DSetting)
diff --git a/main/src/main/scala/sbt/Project.scala b/main/src/main/scala/sbt/Project.scala
index 48db490d0..5ad063dc0 100755
--- a/main/src/main/scala/sbt/Project.scala
+++ b/main/src/main/scala/sbt/Project.scala
@@ -141,7 +141,7 @@ sealed trait Project extends ProjectDefinition[ProjectReference] {
   def aggregate(refs: ProjectReference*): Project = copy(aggregate = (aggregate: Seq[ProjectReference]) ++ refs)
 
   /** Appends settings to the current settings sequence for this project. */
-  def settings(ss: Def.SettingsDefinition*): Project = copy(settings = (settings: Seq[Def.Setting[_]]) ++ ss.flatMap(_.settings))
+  def settings(ss: Def.SettingsDefinition*): Project = copy(settings = (settings: Seq[Def.Setting[_]]) ++ Def.settings(ss: _*))
 
   @deprecated("Use settingSets method.", "0.13.5")
   def autoSettings(select: AddSettings*): Project = settingSets(select.toSeq: _*)