diff --git a/main.py b/main.py
index 668f7a1fe5ab66d47ca112d60d5964f07d71aba7..01812b157b85ac8209cd7127a3d69490c693b3bf 100755
--- a/main.py
+++ b/main.py
@@ -13,7 +13,7 @@ class Node:
 def serialize(node):
     """recursively parse tree creating a string"""
     if node:
-        return "%s,%s,%s" % (node.val,
+        return "%s%s%s" % (node.val,
                                serialize(node.left),
                                serialize(node.right))
     return 'None'
@@ -21,7 +21,7 @@ def serialize(node):
 
 def deserialize(string):
     """recursive deserialization using nested function"""
-    the_list = string.split(',')
+    the_list = string.split('')
     list_len = len(the_list)
     idx = 0