diff --git a/src/message_processor.py b/src/message_processor.py
index 3493c89..0cbdd1d 100644
--- a/src/message_processor.py
+++ b/src/message_processor.py
@@ -142,7 +142,7 @@ def process_high_temp(box_name, context, local_context, payload):
     return True
 
 def process_window(box_name, context, local_context, sub_key, payload):
-    // default converter
+    # default converter
     converter = lambda x:x
     for sk in box["windows"]:
         if sk["label"] == sub_key: