diff --git a/nodes/core/io/21-httpin.js b/nodes/core/io/21-httpin.js
index 3715afb6d..5ad1d5586 100644
--- a/nodes/core/io/21-httpin.js
+++ b/nodes/core/io/21-httpin.js
@@ -149,6 +149,8 @@ module.exports = function(RED) {
                         var len;
                         if (msg.payload == null) {
                             len = 0;
+                        } else if (Buffer.isBuffer(msg.payload)) {
+                            len = msg.payload.length;
                         } else if (typeof msg.payload == "number") {
                             len = Buffer.byteLength(""+msg.payload);
                         } else {