diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index 155ce1137..205085662 100755
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -1434,7 +1434,7 @@ object Classpaths {
           Vector.empty, filterImplicit = false, checkExplicit = true, overrideScalaVersion = true
         )
           .withScalaOrganization(scalaOrganization.value)
-          .withScalaArtifacts(scalaArtifacts.value))
+          .withScalaArtifacts(scalaArtifacts.value.toVector))
       }
     )).value,
     artifactPath in makePom := artifactPathSetting(artifact in makePom).value,
diff --git a/main/src/main/scala/sbt/Keys.scala b/main/src/main/scala/sbt/Keys.scala
index 3d498e4f4..51550f6a0 100644
--- a/main/src/main/scala/sbt/Keys.scala
+++ b/main/src/main/scala/sbt/Keys.scala
@@ -194,7 +194,7 @@ object Keys {
   val printWarnings = TaskKey[Unit]("print-warnings", "Shows warnings from compilation, including ones that weren't printed initially.", BPlusTask)
   val fileInputOptions = SettingKey[Seq[String]]("file-input-options", "Options that take file input, which may invalidate the cache.", CSetting)
   val scalaCompilerBridgeSource = SettingKey[ModuleID]("scala-compiler-bridge-source", "Configures the module ID of the sources of the compiler bridge.", CSetting)
-  val scalaArtifacts = SettingKey[Vector[String]]("scala-artifacts", "Configures the list of artifacts which should match the Scala binary version", CSetting)
+  val scalaArtifacts = SettingKey[Seq[String]]("scala-artifacts", "Configures the list of artifacts which should match the Scala binary version", CSetting)
 
   val clean = TaskKey[Unit]("clean", "Deletes files produced by the build, such as generated sources, compiled classes, and task caches.", APlusTask)
   val console = TaskKey[Unit]("console", "Starts the Scala interpreter with the project classes on the classpath.", APlusTask)