diff --git a/io/stomp/18-stomp.js b/io/stomp/18-stomp.js
index 388a84c3..4db8fef8 100644
--- a/io/stomp/18-stomp.js
+++ b/io/stomp/18-stomp.js
@@ -221,7 +221,7 @@ module.exports = function(RED) {
             });
 
             node.on("input", function(msg) {
-                node.ack(msg.messageId, msg.subsriptionId, msg.transaction);
+                node.client.ack(msg.messageId, msg.subsriptionId, msg.transaction);
             });
 
             node.on("close", function(done) {