diff --git a/meshtastic/__init__.py b/meshtastic/__init__.py
index 0cdca2f..f74e84a 100644
--- a/meshtastic/__init__.py
+++ b/meshtastic/__init__.py
@@ -197,7 +197,7 @@ protocols = {
         "rangetest", onReceive=_onTextReceive
     ),
     portnums_pb2.PortNum.DETECTION_SENSOR_APP: KnownProtocol(
-        "rangetest", onReceive=_onTextReceive
+        "detectionsensor", onReceive=_onTextReceive
     ),
 
     portnums_pb2.PortNum.POSITION_APP: KnownProtocol(