diff --git a/jetty-client/src/main/java/org/eclipse/jetty/client/ProxyProtocolClientConnectionFactory.java b/jetty-client/src/main/java/org/eclipse/jetty/client/ProxyProtocolClientConnectionFactory.java
index fac784d5bcf..58e032abf03 100644
--- a/jetty-client/src/main/java/org/eclipse/jetty/client/ProxyProtocolClientConnectionFactory.java
+++ b/jetty-client/src/main/java/org/eclipse/jetty/client/ProxyProtocolClientConnectionFactory.java
@@ -444,7 +444,7 @@ public abstract class ProxyProtocolClientConnectionFactory implements ClientConn
 
     protected abstract ProxyProtocolConnection newProxyProtocolConnection(EndPoint endPoint, Map<String, Object> context);
 
-    private abstract static class ProxyProtocolConnection extends AbstractConnection implements Callback
+    protected abstract static class ProxyProtocolConnection extends AbstractConnection implements Callback
     {
         protected static final Logger LOG = Log.getLogger(ProxyProtocolConnection.class);