diff --git a/src/danog/MadelineProto/DataCenter.php b/src/danog/MadelineProto/DataCenter.php
index 6926e252..dde7be37 100644
--- a/src/danog/MadelineProto/DataCenter.php
+++ b/src/danog/MadelineProto/DataCenter.php
@@ -54,6 +54,7 @@ class DataCenter
         $test = $settings['test_mode'] ? 'test' : 'main';
         $ipv6 = $settings['ipv6'] ? 'ipv6' : 'ipv4';
         $address = $this->dclist[$test][$ipv6][$dc_number]['ip_address'];
+        $address = $settings['ipv6'] ? '['.$address.']' : $address;
         $port = $this->dclist[$test][$ipv6][$dc_number]['port'];
         if ($settings['protocol'] == 'https') {
             $subdomain = $this->dclist['ssl_subdomains'][$dc_number].($settings['upload'] ? '-1' : '');
diff --git a/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php b/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php
index 493dbbca..6465d7a7 100644
--- a/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php
+++ b/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php
@@ -455,7 +455,7 @@ trait UpdateHandler
             $update['message']['out'] = true;
         }
         \danog\MadelineProto\Logger::log('Saving an update of type '.$update['_'].'...');
-        if ($this->settings['pwr']['strict']) {
+        if (isset($this->settings['pwr']['strict']) && $this->settings['pwr']['strict']) {
             $this->pwr_update_handler($update);
         } else {
             $this->settings['updates']['callback']($update);