diff --git a/nodes/core/io/21-httprequest.js b/nodes/core/io/21-httprequest.js
index 21ba779d0..4cb5093af 100644
--- a/nodes/core/io/21-httprequest.js
+++ b/nodes/core/io/21-httprequest.js
@@ -74,6 +74,8 @@ module.exports = function(RED) {
             var opts = urllib.parse(url);
             opts.method = method;
             opts.headers = {};
+            var ctSet = "Content-Type"; // set default camel case
+            var clSet = "Content-Length";
             if (msg.headers) {
                 for (var v in msg.headers) {
                     if (msg.headers.hasOwnProperty(v)) {
@@ -83,6 +85,8 @@ module.exports = function(RED) {
                             // function. Otherwise leave them alone.
                             name = v;
                         }
+                        else if (name === 'content-type') { ctSet = v; }
+                        else { clSet = v; }
                         opts.headers[name] = msg.headers[v];
                     }
                 }
@@ -103,18 +107,27 @@ module.exports = function(RED) {
                     } else {
                         payload = JSON.stringify(msg.payload);
                         if (opts.headers['content-type'] == null) {
-                            opts.headers['content-type'] = "application/json";
+                            opts.headers[ctSet] = "application/json";
                         }
                     }
                 }
                 if (opts.headers['content-length'] == null) {
                     if (Buffer.isBuffer(payload)) {
-                        opts.headers['content-length'] = payload.length;
+                        opts.headers[clSet] = payload.length;
                     } else {
-                        opts.headers['content-length'] = Buffer.byteLength(payload);
+                        opts.headers[clSet] = Buffer.byteLength(payload);
                     }
                 }
             }
+            // revert to user supplied Capitalisation if needed.
+            if (opts.headers.hasOwnProperty('content-type') && (ctSet !== 'content-type')) {
+                opts.headers[ctSet] = opts.headers['content-type'];
+                delete opts.headers['content-type'];
+            }
+            if (opts.headers.hasOwnProperty('content-length') && (clSet !== 'content-length')) {
+                opts.headers[clSet] = opts.headers['content-length'];
+                delete opts.headers['content-length'];
+            }
             var urltotest = url;
             var noproxy;
             if (noprox) {
@@ -135,7 +148,6 @@ module.exports = function(RED) {
                     opts.path = opts.pathname = path;
                     opts.headers = heads;
                     opts.method = method;
-                    //console.log(opts);
                     urltotest = match[0];
                 }
                 else { node.warn("Bad proxy url: "+process.env.http_proxy); }