diff --git a/sms.py b/sms.py
index a98ce8d..caed005 100644
--- a/sms.py
+++ b/sms.py
@@ -53,7 +53,7 @@ def send_sms(twilio_phone_number, to_phone_number, from_callsign, body_message):
 
 def format_aprs_packet(callsign, message):
     sender_length = len(callsign)
-    spaces_after_sender = ' ' * max(1, 9 - sender_length)
+    spaces_after_sender = ' ' * max(0, 9 - sender_length)
     aprs_packet_format = '{}>NA7Q::{}{}:{}\r\n'.format(APRS_CALLSIGN, callsign, spaces_after_sender, message)
     return aprs_packet_format