diff --git a/md5hash.py b/md5hash.py
index ccc7652..64cf02e 100644
--- a/md5hash.py
+++ b/md5hash.py
@@ -4,10 +4,12 @@ def hash(boxID, coin_name, public_key, private_key, webdev_key, amount,
          period, amountUSD, userID, language, iframeID, orderID,
          width, height):
     user_format = 'MANUAL' 
-    string = ''
-    string = (str(boxID) + coin_name + public_key + private_key +webdev_key +
-              str(amount) + period + str(amountUSD)+ language + str(amount) +
-              iframeID + str(amountUSD) + userID + user_format + orderID +
-              str(width) + str(height))
+    values_to_combine = [
+              str(boxID), coin_name, public_key, private_key, webdev_key,
+              str(amount), str(amountUSD), period, language,
+              orderID, userID, user_format, iframeID,
+              str(width), str(height),
+            ]
+    string = '|'.join(values_to_combine)
     m = hashlib.md5(string.encode('utf-8'))
     return m.hexdigest()
diff --git a/md5hash.pyc b/md5hash.pyc
new file mode 100644
index 0000000..92479e1
Binary files /dev/null and b/md5hash.pyc differ