diff --git a/src/main/scala/stdlib/SequencesandArrays.scala b/src/main/scala/stdlib/SequencesandArrays.scala
index 8ffa82b6..8188e324 100644
--- a/src/main/scala/stdlib/SequencesandArrays.scala
+++ b/src/main/scala/stdlib/SequencesandArrays.scala
@@ -69,7 +69,7 @@ object SequencesandArrays
 
   /** You can map values in a sequence through a function:
    */
-  def mapValuesSequencesandArrays(res0: List[String]) {
+  def mapValuesSequencesandArrays(res0: Seq[String]) {
     val s = Seq("hello", "world")
     val r = s map {
       _.reverse
diff --git a/src/test/scala/stdlib/SequencesAndArraysSpec.scala b/src/test/scala/stdlib/SequencesAndArraysSpec.scala
index 68e46153..8c315717 100644
--- a/src/test/scala/stdlib/SequencesAndArraysSpec.scala
+++ b/src/test/scala/stdlib/SequencesAndArraysSpec.scala
@@ -70,7 +70,7 @@ class SequencesAndArraysSpec extends Spec with Checkers {
     check(
       Test.testSuccess(
         SequencesandArrays.mapValuesSequencesandArrays _,
-        List("olleh", "dlrow") :: HNil
+        Seq("olleh", "dlrow") :: HNil
       )
     )
   }