diff --git a/service.py b/service.py
index 0150a9d..c249184 100644
--- a/service.py
+++ b/service.py
@@ -203,7 +203,7 @@ class MongoDriver(MeshArgsParse):
             v["device_uuid"] = from_radio["device_uuid"]
             await self.dbStore[k].insert_one(v)
 
-    def tryParseProtobuf(v):
+    def tryParseProtobuf(self, v):
         try:
             if v.get("portnum", 0) in []:
                 pass