diff --git a/cookiejar.js b/cookiejar.js
index 2afe2e7..3937e37 100644
--- a/cookiejar.js
+++ b/cookiejar.js
@@ -62,7 +62,6 @@
         return this.name + "=" + this.value;
     };
 
-    var cookie_str_splitter = /[:](?=\s*[a-zA-Z0-9_\-]+\s*[=])/g;
     Cookie.prototype.parse = function parse(str, request_domain, request_path) {
         if (this instanceof Cookie) {
             var parts = str.split(";").filter(function (value) {
@@ -227,7 +226,7 @@
                     }
                 }
                 matches.toString = function toString() {
-                    return matches.join(":");
+                    return matches.join(",");
                 };
                 matches.toValueString = function toValueString() {
                     return matches.map(function (c) {
@@ -247,7 +246,7 @@
     CookieJar.prototype.setCookies = function setCookies(cookies, request_domain, request_path) {
         cookies = Array.isArray(cookies) ?
                 cookies :
-                cookies.split(cookie_str_splitter);
+                cookies.split(/[,](?=\s*[a-zA-Z0-9_\-]+\s*[=])/g);
         var successful = [],
             i,
             cookie;
diff --git a/tests/test.js b/tests/test.js
index d4ea27f..7245789 100644
--- a/tests/test.js
+++ b/tests/test.js
@@ -26,8 +26,8 @@ assert.equal(cookie.domain, ".test.com");
 var test_jar = CookieJar();
 test_jar.setCookies(
  "a=1;domain=.test.com;path=/"
- +":b=2;domain=test.com;path=/"
- +":c=3;domain=test.com;path=/;expires=January 1, 1970");
+ +",b=2;domain=test.com;path=/"
+ +",c=3;domain=test.com;path=/;expires=January 1, 1970");
 var cookies=test_jar.getCookies(CookieAccessInfo("test.com","/"))
 assert.equal(cookies.length, 2, "Expires on setCookies fail\n" + cookies.toString());
 assert.equal(cookies.toValueString(), 'a=1;b=2', "Cannot get value string of multiple cookies");