diff --git a/akka-stream/src/main/scala/akka/stream/stage/GraphStage.scala b/akka-stream/src/main/scala/akka/stream/stage/GraphStage.scala
index 4abebefb03..5289ea1f94 100644
--- a/akka-stream/src/main/scala/akka/stream/stage/GraphStage.scala
+++ b/akka-stream/src/main/scala/akka/stream/stage/GraphStage.scala
@@ -69,7 +69,7 @@ private object TimerMessages {
 
 object GraphStageLogic {
   final case class StageActorRefNotInitializedException()
-    extends RuntimeException("You must first call getStageActorRef, to initialize the Actors behaviour")
+    extends RuntimeException("You must first call getStageActor, to initialize the Actors behaviour")
 
   /**
    * Input handler that terminates the stage upon receiving completion.