diff --git a/pyracing/client.py b/pyracing/client.py
index ba6a715..82a9159 100644
--- a/pyracing/client.py
+++ b/pyracing/client.py
@@ -782,3 +782,4 @@ async def yearly_stats(self, cust_id):
             return []
 
         return [career_stats.YearlyStats(x) for x in response.json()]
+    def cleanup_payload(payload):
diff --git a/pyracing/helpers.py b/pyracing/helpers.py
index 5319fe0..25af86f 100644
--- a/pyracing/helpers.py
+++ b/pyracing/helpers.py
@@ -31,7 +31,6 @@ def now_five_min_floor():
 
 
 def parse_encode(string):
-    if not type(string) is str:
+    if not isinstance(string, str):
         return ''
-
     return urllib.parse.unquote(string).replace('+', ' ')