diff --git a/lib/json2xml.js b/lib/json2xml.js
index 5f8f938..f682540 100644
--- a/lib/json2xml.js
+++ b/lib/json2xml.js
@@ -23,18 +23,18 @@ module.exports = function toXml(json, xml) {
         var key = keys[i], value = obj[key], isArray = Array.isArray(value);
         var type = typeof(value);
         if (type == 'string' || type == 'number' || type == 'boolean' || isArray) {
-			var it = isArray ? value : [value];
+            var it = isArray ? value : [value];
 
-			it.forEach(function(subVal) {
-				if (typeof(subVal) != 'object') {
-					if (key == '$t') {
-						xml += subVal;
-					} else {
-						xml = xml.replace(/>$/, '');
-						xml += ' ' + key + '="' + subVal + '">';
-					}
-				}
-			})
+            it.forEach(function(subVal) {
+                if (typeof(subVal) != 'object') {
+                    if (key == '$t') {
+                        xml += subVal;
+                    } else {
+                        xml = xml.replace(/>$/, '');
+                        xml += ' ' + key + '="' + subVal + '">';
+                    }
+                }
+            })
         }
     }
 
@@ -46,13 +46,13 @@ module.exports = function toXml(json, xml) {
             var elems = obj[key];
             var l = elems.length;
             for (var j = 0; j < l; j++) {
-				var elem = elems[j];
+                var elem = elems[j];
 
-				if (typeof(elem) == 'object') {
-					xml += '<' + key + '>';
-					xml = toXml(elem, xml);
-					xml += '</' + key + '>';
-				}
+                if (typeof(elem) == 'object') {
+                    xml += '<' + key + '>';
+                    xml = toXml(elem, xml);
+                    xml += '</' + key + '>';
+                }
             }
         } else if (typeof(obj[key]) == 'object') {
             xml += '<' + key + '>';