diff --git a/Readme.md b/Readme.md
index e718f5be..500c37ef 100644
--- a/Readme.md
+++ b/Readme.md
@@ -69,7 +69,7 @@ Then, run the program to be debugged as usual.
 
 ## Millisecond diff
 
-  When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls.
+  When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls. Can be disabled with `DEBUG_DIFF=0`
 
   ![](http://f.cl.ly/items/2i3h1d3t121M2Z1A3Q0N/Screenshot.png)
 
diff --git a/node.js b/node.js
index 1d392a81..e361486c 100644
--- a/node.js
+++ b/node.js
@@ -18,6 +18,7 @@ exports.formatArgs = formatArgs;
 exports.save = save;
 exports.load = load;
 exports.useColors = useColors;
+exports.useDiff = useDiff;
 
 /**
  * Colors.
@@ -53,6 +54,18 @@ function useColors() {
   }
 }
 
+/**
+ * Allow disabling ms diff, enabled by default.
+ */
+
+function useDiff() {
+  var diff = (process.env.DEBUG_DIFF || '').trim().toLowerCase();
+  return '0' !== diff
+      && 'no' !== diff
+      && 'false' !== diff
+      && 'disabled' !== diff;
+}
+
 /**
  * Map %o to `util.inspect()`, since Node doesn't do that out of the box.
  */
@@ -86,14 +99,14 @@ function formatArgs() {
 
   if (useColors) {
     var c = this.color;
-
+    var timeStamp = useDiff() ? ' +' + exports.humanize(this.diff) : ''
     args[0] = '  \u001b[3' + c + ';1m' + name + ' '
       + '\u001b[0m'
       + args[0] + '\u001b[3' + c + 'm'
-      + ' +' + exports.humanize(this.diff) + '\u001b[0m';
+      + timeStamp + '\u001b[0m';
   } else {
-    args[0] = new Date().toUTCString()
-      + ' ' + name + ' ' + args[0];
+    var timeStamp = useDiff() ? new Date().toUTCString() + ' ' : ''
+    args[0] = timeStamp + name + ' ' + args[0];
   }
   return args;
 }
diff --git a/package.json b/package.json
index b9f033a7..f9f1a9b2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "debug",
-  "version": "2.2.0",
+  "version": "2.3.0",
   "repository": {
     "type": "git",
     "url": "git://github.com/visionmedia/debug.git"