diff --git a/CHANGELOG b/CHANGELOG
index f70dbb9d7..a0dcc374f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+Version 1.0.3 (2014-06-27)
+--------------------------
+Changed Base64 encoding function to prevent character encoding errors, thanks @shermozle! (#231)
+
 Version 1.0.2 (2014-06-24)
 --------------------------
 Added guard to prevent document size field from being set as "NaNxNaN" (#220)
diff --git a/package.json b/package.json
index 6f8e3915c..7f503ee68 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "snowplow-tracker",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "devDependencies": {
     "grunt": "~0.4.2",
     "intern": "~1.4.0",
@@ -14,7 +14,6 @@
     "grunt-browserify": "~1.3.0",
     "jstimezonedetect": "~1.0.5",
     "JSON": "~1.0.0",
-    "Base64": "~0.2.0",
     "sha1": "git://github.com/pvorb/node-sha1.git#v1.0.0",
     "grunt-lodash": "~0.3.0"
   },
diff --git a/src/js/lib/base64.js b/src/js/lib/base64.js
new file mode 100644
index 000000000..715c0e63b
--- /dev/null
+++ b/src/js/lib/base64.js
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2013 Kevin van Zonneveld (http://kvz.io)
+ * and Contributors (http://phpjs.org/authors)
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+(function() {
+
+	var object = typeof exports !== 'undefined' ? exports : this; // For eventual node.js environment support
+
+	function base64_encode(data) {
+		// discuss at: http://phpjs.org/functions/base64_encode/
+		// original by: Tyler Akins (http://rumkin.com)
+		// improved by: Bayron Guevara
+		// improved by: Thunder.m
+		// improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+		// improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+		// improved by: Rafał Kukawski (http://kukawski.pl)
+		// bugfixed by: Pellentesque Malesuada
+		// example 1: base64_encode('Kevin van Zonneveld');
+		// returns 1: 'S2V2aW4gdmFuIFpvbm5ldmVsZA=='
+		// example 2: base64_encode('a');
+		// returns 2: 'YQ=='
+		// example 3: base64_encode('✓ à la mode');
+		// returns 3: '4pyTIMOgIGxhIG1vZGU='
+
+		var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+		var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
+			ac = 0,
+			enc = '',
+			tmp_arr = [];
+
+		if (!data) {
+			return data;
+		}
+
+		data = unescape(encodeURIComponent(data));
+
+		do {
+			// pack three octets into four hexets
+			o1 = data.charCodeAt(i++);
+			o2 = data.charCodeAt(i++);
+			o3 = data.charCodeAt(i++);
+
+			bits = o1 << 16 | o2 << 8 | o3;
+
+			h1 = bits >> 18 & 0x3f;
+			h2 = bits >> 12 & 0x3f;
+			h3 = bits >> 6 & 0x3f;
+			h4 = bits & 0x3f;
+
+			// use hexets to index into b64, and append result to encoded string
+			tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
+		} while (i < data.length);
+
+		enc = tmp_arr.join('');
+
+		var r = data.length % 3;
+
+		return (r ? enc.slice(0, r - 3) : enc) + '==='.slice(r || 3);
+	}
+
+	object.base64encode = base64_encode;
+
+}());
diff --git a/src/js/payload.js b/src/js/payload.js
index 7dc633a6e..b875ec2c0 100644
--- a/src/js/payload.js
+++ b/src/js/payload.js
@@ -37,9 +37,7 @@
 	var
 		lodash = require('./lib/lodash'),
 		json2 = require('JSON'),
-		Base64 = require('Base64'),
-		base64encode = Base64.btoa,
-		base64decode = Base64.atob,
+		base64 = require('./lib/base64'),
 
 		object = typeof exports !== 'undefined' ? exports : this; // For eventual node.js environment support
 
@@ -51,7 +49,7 @@
 	function base64urlencode(data) {
 	  if (!data) return data;
 
-	  var enc = base64encode(data);
+	  var enc = base64.base64encode(data);
 	  return enc.replace(/=/g, '')
 	            .replace(/\+/g, '-')
 	            .replace(/\//g, '_');
diff --git a/src/js/snowplow.js b/src/js/snowplow.js
index 45e5c0ed1..4c5b13696 100644
--- a/src/js/snowplow.js
+++ b/src/js/snowplow.js
@@ -88,7 +88,7 @@
 			windowAlias = window,
 
 			/* Tracker identifier with version */
-			version = 'js-1.0.2', // Update banner.js too
+			version = 'js-1.0.3',
 
 			/* Contains three variables that are shared with tracker.js and must be passed by reference */
 			mutSnowplowState = {