diff --git a/src/TimeZoneService.php b/src/TimeZoneService.php
index 4c4afc1..c6cb094 100644
--- a/src/TimeZoneService.php
+++ b/src/TimeZoneService.php
@@ -135,7 +135,6 @@ private function getLabel($timezone): string
      */
     private function getTimeDiff($time): string
     {
-        $time_diff_symbol = Config::get('Timezone.TIME_DIFF_SYMBOL', '.');
         $time_diff_symbol = Config::get('Timezone.TIME_DIFF_SYMBOL', '.');
         $str_time_diff = $time->format('p');
         return str_replace(':', $time_diff_symbol, $str_time_diff);