diff --git a/src/remoteClient/clientContextImpl.cpp b/src/remoteClient/clientContextImpl.cpp
index fb78efb..fe99130 100644
--- a/src/remoteClient/clientContextImpl.cpp
+++ b/src/remoteClient/clientContextImpl.cpp
@@ -3204,7 +3204,7 @@ public:
     {
         AbstractClientResponseHandler::handleResponse(responseFrom, transport, version, command, payloadSize, payloadBuffer);
 
-        transport->ensureData(4);
+        transport->ensureData(8);
         pvAccessID cid = payloadBuffer->getInt();
         /*pvAccessID sid =*/ payloadBuffer->getInt();