diff --git a/lib/securerandomstring.js b/lib/securerandomstring.js
index d0c8324..b1d84e5 100644
--- a/lib/securerandomstring.js
+++ b/lib/securerandomstring.js
@@ -13,6 +13,10 @@ function securerandomstring(options, cb) {
 		if (ex) throw ex;
 
 		var string = buf.toString('base64');
+		if (options.urlsafe) {
+			string = string.replace(/\//g,'_').replace(/\+/g,'-');
+		}
+
 		cb(string.substr(0, length));
 	});
 
diff --git a/package.json b/package.json
index 0ed5752..1257e79 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "securerandomstring",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "Generates a secure random string with a given length",
   "main": "lib/securerandomstring.js",
   "scripts": {
diff --git a/tests.js b/tests.js
index ba371e1..dacaaa6 100644
--- a/tests.js
+++ b/tests.js
@@ -50,4 +50,11 @@ securerandomstring({length: 256}, function(sr) {
 	);
 });
 
+securerandomstring({length: 256, urlsafe: true}, function(sr) {
+	test('generate a urlsafe random string 256 chars long',
+		sr.length,
+		256
+	);
+});
+