diff --git a/pong_bot.py b/pong_bot.py
index 2e72429..c932e7c 100755
--- a/pong_bot.py
+++ b/pong_bot.py
@@ -143,6 +143,8 @@ def onReceive(packet, interface):
     message_from_id = 0
 
     # check for a message packet and process it
+    snr = 0
+    rssi = 0
     try:
         if 'decoded' in packet and packet['decoded']['portnum'] == 'TEXT_MESSAGE_APP':
             message_bytes = packet['decoded']['payload']