diff --git a/akka-http-core/src/test/scala/akka/http/impl/engine/rendering/ResponseRendererSpec.scala b/akka-http-core/src/test/scala/akka/http/impl/engine/rendering/ResponseRendererSpec.scala
index c2edb961b6..87a59fc0ae 100644
--- a/akka-http-core/src/test/scala/akka/http/impl/engine/rendering/ResponseRendererSpec.scala
+++ b/akka-http-core/src/test/scala/akka/http/impl/engine/rendering/ResponseRendererSpec.scala
@@ -303,7 +303,7 @@ class ResponseRendererSpec extends FreeSpec with Matchers with BeforeAndAfterAll
       "with one chunk and an explicit LastChunk" in new TestSetup() {
         HttpResponse(entity = Chunked(ContentTypes.`text/plain(UTF-8)`,
           source(Chunk(ByteString("body123"), """key=value;another="tl;dr""""),
-            LastChunk("foo=bar", List(Age(30), RawHeader("Cache-Control", "public")))).via(printEvent("source")))) should renderTo {
+            LastChunk("foo=bar", List(Age(30), RawHeader("Cache-Control", "public")))))) should renderTo {
           """HTTP/1.1 200 OK
             |Server: akka-http/1.0.0
             |Date: Thu, 25 Aug 2011 09:10:29 GMT