diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index 283822291..7975d71e1 100755
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -154,6 +154,7 @@ object Defaults extends BuildCommon {
       inputFileStamper :== sbt.nio.FileStamper.Hash,
       outputFileStamper :== sbt.nio.FileStamper.LastModified,
       onChangedBuildSource :== sbt.nio.Keys.WarnOnSourceChanges,
+      watchTriggeredMessage :== sbt.nio.Watch.defaultOnTriggerMessage,
       watchForceTriggerOnAnyChange :== false,
       watchPersistFileStamps :== true,
       watchTriggers :== Nil,
diff --git a/main/src/main/scala/sbt/internal/Continuous.scala b/main/src/main/scala/sbt/internal/Continuous.scala
index d9f9e92c4..080925606 100644
--- a/main/src/main/scala/sbt/internal/Continuous.scala
+++ b/main/src/main/scala/sbt/internal/Continuous.scala
@@ -920,7 +920,7 @@ private[sbt] object Continuous extends DeprecatedContinuous {
   )(implicit e: Extracted): TriggerMessage = {
     lazy val default =
       key.get(watchTriggeredMessage).getOrElse(Watch.defaultOnTriggerMessage)
-    key.get(deprecatedWatchingMessage).map(Left(_)).getOrElse(Right(default))
+    key.get(deprecatedTriggeredMessage).map(Left(_)).getOrElse(Right(default))
   }
 
   private implicit class ScopeOps(val scope: Scope) {