diff --git a/bot.php b/bot.php
index 9adeecc..207c576 100644
--- a/bot.php
+++ b/bot.php
@@ -79,7 +79,7 @@
     $serial->deviceClose();
 
     $toReturn = trim(preg_replace('/\s+/', ' ', $devResponse));
-    if(str_contains($toReturn, "Thank you")){
+    if(strpos($toReturn, "Thank you") === true){ // have sent more than 20 signals
         $toReturn = trim(string_between_two_string($toReturn, 'Shared the Signal: ', 'Thank you'));
     }else{
         $toReturn = trim(string_between_two_string($toReturn, 'Shared the Signal: ', 'se try again'));