diff --git a/lib/apple/index.js b/lib/apple/index.js
index 19b0977..2d82933 100644
--- a/lib/apple/index.js
+++ b/lib/apple/index.js
@@ -88,7 +88,7 @@ exports.verifyPayment = function (payment, cb) {
 	}
 
 
-	function checkReceipt(error, resultString) {
+	function checkReceipt(error, result) {
 		if (error) {
 			return cb(error);
 		}
diff --git a/lib/https/post.js b/lib/https/post.js
index f3114f3..8b061cb 100644
--- a/lib/https/post.js
+++ b/lib/https/post.js
@@ -14,8 +14,8 @@ module.exports = function (url, options, cb) {
 				'content-type': 'application/x-www-form-urlencoded',
 				'content-length': Buffer.byteLength(data)
 			};
-		} else if (data.json) {
-			data = JSON.stringify(data.json);
+		} else if (options.json) {
+			data = JSON.stringify(options.json);
 			options.headers = {
 				'content-type': 'application/json',
 				'content-length': Buffer.byteLength(data)