diff --git a/jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/io/AbstractWebSocketConnection.java b/jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/io/AbstractWebSocketConnection.java
index c93330d7d56c..a9535a9d9321 100644
--- a/jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/io/AbstractWebSocketConnection.java
+++ b/jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/io/AbstractWebSocketConnection.java
@@ -497,7 +497,7 @@ private void onFillable(ByteBuffer buffer)
                 case DISCARD:
                     if (LOG.isDebugEnabled())
                         LOG.debug("Discarded buffer - {}", BufferUtil.toDetailString(buffer));
-                    buffer.clear();
+                    BufferUtil.clear(buffer);
                     break;
 
                 case SUSPEND: