diff --git a/include/functions.php b/include/functions.php
index f580d12..c8139b0 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -808,7 +808,9 @@ function getName($callsign) {
 // M: 2017-02-13 15:53:30.991 0000:  04 00 5E 49 57 38 44 59 94                         *..^IW8DY.*
 // M: 2017-02-13 15:53:31.253 0000:  05 00 20 47 69 6F 76 61 DC                         *.. Giova.*
 function decodeAlias($logLine) {
-  $tok1 = encode(substr($logLine, 40, 2));
+  $tok1 = "";
+  if (substr($logLine, 34, 2) !=="04")
+    $tok1 = encode(substr($logLine, 40, 2));
   $tok2 = encode(substr($logLine, 43, 2));
   $tok3 = encode(substr($logLine, 46, 2));
   $tok4 = encode(substr($logLine, 49, 2));