diff --git a/src/danog/MadelineProto/InternalDoc.php b/src/danog/MadelineProto/InternalDoc.php
index 1c65b76e..bdc01d7e 100644
--- a/src/danog/MadelineProto/InternalDoc.php
+++ b/src/danog/MadelineProto/InternalDoc.php
@@ -5543,34 +5543,6 @@ class InternalDoc extends APIFactory
     {
         \danog\MadelineProto\MTProto::setVar($obj, $var, $val);
     }
-    /**
-     * Accept call from VoIP instance.
-     *
-     * @param \danog\MadelineProto\VoIP $instance Call instance
-     * @param array                     $user     User
-     *
-     * @return mixed
-     */
-    public function acceptCallFrom($instance, $user, array $extra = [])
-    {
-        return $this->__call(__FUNCTION__, [$instance, $user, $extra]);
-    }
-    /**
-     * Undocumented function.
-     *
-     * @param \danog\MadelineProto\VoIP $instance   Call instance
-     * @param array                     $call       Call info
-     * @param array                     $reason     Discard reason
-     * @param array                     $rating     Rating
-     * @param boolean                   $need_debug Needs debug?
-     *
-     * @return mixed
-     */
-    public function discardCallFrom($instance, $call, $reason, $rating = [
-    ], $need_debug = true, array $extra = [])
-    {
-        return $this->__call(__FUNCTION__, [$instance, $call, $reason, $rating, $need_debug, $extra]);
-    }
     /**
      * Request VoIP call.
      *
diff --git a/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php b/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php
index 9ace817b..cd0fd64a 100644
--- a/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php
+++ b/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php
@@ -110,7 +110,7 @@ trait AuthKeyHandler
                  */
                 $pq = new \tgseclib\Math\BigInteger((string) $pq_bytes, 256);
                 $q = new \tgseclib\Math\BigInteger(0);
-                $p = new \tgseclib\Math\BigInteger(\danog\PrimeModule::auto_single($pq->__toString()));
+                $p = new \tgseclib\Math\BigInteger(@\danog\PrimeModule::auto_single($pq->__toString()));
                 if (!$p->equals(\danog\MadelineProto\Magic::$zero)) {
                     $q = $pq->divide($p)[0];
                     if ($p->compare($q) > 0) {
@@ -119,7 +119,7 @@ trait AuthKeyHandler
                 }
                 if (!$pq->equals($p->multiply($q))) {
                     $this->logger->logger('Automatic factorization failed, trying native CPP module', \danog\MadelineProto\Logger::ERROR);
-                    $p = new \tgseclib\Math\BigInteger(\danog\PrimeModule::native_single_cpp($pq->__toString()));
+                    $p = new \tgseclib\Math\BigInteger(@\danog\PrimeModule::native_single_cpp($pq->__toString()));
                     if (!$p->equals(\danog\MadelineProto\Magic::$zero)) {
                         $q = $pq->divide($p)[0];
                         if ($p->compare($q) > 0) {
@@ -128,7 +128,7 @@ trait AuthKeyHandler
                     }
                     if (!$pq->equals($p->multiply($q))) {
                         $this->logger->logger('Automatic factorization failed, trying alt py module', \danog\MadelineProto\Logger::ERROR);
-                        $p = new \tgseclib\Math\BigInteger(\danog\PrimeModule::python_single_alt($pq->__toString()));
+                        $p = new \tgseclib\Math\BigInteger(@\danog\PrimeModule::python_single_alt($pq->__toString()));
                         if (!$p->equals(\danog\MadelineProto\Magic::$zero)) {
                             $q = $pq->divide($p)[0];
                             if ($p->compare($q) > 0) {
@@ -137,7 +137,7 @@ trait AuthKeyHandler
                         }
                         if (!$pq->equals($p->multiply($q))) {
                             $this->logger->logger('Automatic factorization failed, trying py module', \danog\MadelineProto\Logger::ERROR);
-                            $p = new \tgseclib\Math\BigInteger(\danog\PrimeModule::python_single($pq->__toString()));
+                            $p = new \tgseclib\Math\BigInteger(@\danog\PrimeModule::python_single($pq->__toString()));
                             if (!$p->equals(\danog\MadelineProto\Magic::$zero)) {
                                 $q = $pq->divide($p)[0];
                                 if ($p->compare($q) > 0) {
@@ -146,7 +146,7 @@ trait AuthKeyHandler
                             }
                             if (!$pq->equals($p->multiply($q))) {
                                 $this->logger->logger('Automatic factorization failed, trying native module', \danog\MadelineProto\Logger::ERROR);
-                                $p = new \tgseclib\Math\BigInteger(\danog\PrimeModule::native_single($pq->__toString()));
+                                $p = new \tgseclib\Math\BigInteger(@\danog\PrimeModule::native_single($pq->__toString()));
                                 if (!$p->equals(\danog\MadelineProto\Magic::$zero)) {
                                     $q = $pq->divide($p)[0];
                                     if ($p->compare($q) > 0) {
diff --git a/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php b/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php
index 0619d0f2..7fcc2c0f 100644
--- a/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php
+++ b/src/danog/MadelineProto/MTProtoTools/UpdateHandler.php
@@ -372,7 +372,7 @@ trait UpdateHandler
                     if (!isset($this->calls[$update['phone_call']['id']])) {
                         return;
                     }
-                    return $this->calls[$update['phone_call']['id']]->discard($update['phone_call']['reason'], [], $update['phone_call']['need_debug']);
+                    return $this->calls[$update['phone_call']['id']]->discard($update['phone_call']['reason'] ?? [], [], $update['phone_call']['need_debug'] ?? false);
             }
         }
         if ($update['_'] === 'updateNewEncryptedMessage' && !isset($update['message']['decrypted_message'])) {
diff --git a/src/danog/MadelineProto/VoIP/AuthKeyHandler.php b/src/danog/MadelineProto/VoIP/AuthKeyHandler.php
index e3ae907b..c0bde324 100644
--- a/src/danog/MadelineProto/VoIP/AuthKeyHandler.php
+++ b/src/danog/MadelineProto/VoIP/AuthKeyHandler.php
@@ -36,6 +36,8 @@ trait AuthKeyHandler
      * @param \danog\MadelineProto\VoIP $instance Call instance
      * @param array                     $user     User
      *
+     * @internal
+     *
      * @return mixed
      */
     public function acceptCallFrom($instance, $user)
@@ -61,6 +63,8 @@ trait AuthKeyHandler
      * @param array                     $rating     Rating
      * @param boolean                   $need_debug Needs debug?
      *
+     * @internal
+     *
      * @return mixed
      */
     public function discardCallFrom($instance, $call, $reason, $rating = [], $need_debug = true)