diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java
index b2b346a6b..07023286e 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java
@@ -890,6 +890,7 @@ private void lsRefsV2() throws IOException {
 		} else if (line != PacketLineIn.END) {
 			throw new PackProtocolException("unexpected " + line);
 		}
+		rawOut.stopBuffering();
 
 		adv.send(refs);
 		adv.end();