diff --git a/core/io/stream_peer.cpp b/core/io/stream_peer.cpp
index 176d55ffdda..baaeacaf182 100644
--- a/core/io/stream_peer.cpp
+++ b/core/io/stream_peer.cpp
@@ -544,6 +544,7 @@ Ref<StreamPeerBuffer> StreamPeerBuffer::duplicate() const {
 	Ref<StreamPeerBuffer> spb;
 	spb.instance();
 	spb->data=data;
+	return spb;
 }