diff --git a/src/BigIntegor.php b/src/BigIntegor.php
index f539af6b..1ddf371c 100644
--- a/src/BigIntegor.php
+++ b/src/BigIntegor.php
@@ -2,9 +2,18 @@
 
 namespace phpseclib\Math;
 
-if (PHP_MAJOR_VERSION < 7 && !(class_exists('\Phar') && \Phar::running())) {
+if (PHP_MAJOR_VERSION < 7 && !(class_exists('\\Phar') && \Phar::running())) {
     throw new \Exception('MadelineProto requires php 7 to run');
 }
+if (defined('HHVM_VERSION')) {
+    $engines = [['PHP64', ['OpenSSL']], ['BCMath', ['OpenSSL']], ['PHP32', ['OpenSSL']]];
+    foreach ($engines as $engine) {
+        try {
+           \phpseclib\Math\BigInteger::setEngine($engine[0], isset($engine[1]) ? $engine[1] : []);
+           break;
+        } catch (\Exception $e) {}
+    }
+}
 
 class BigIntegor
 {
diff --git a/src/danog/MadelineProto/TL/Exception.php b/src/danog/MadelineProto/TL/Exception.php
index dce65211..e42cca4d 100644
--- a/src/danog/MadelineProto/TL/Exception.php
+++ b/src/danog/MadelineProto/TL/Exception.php
@@ -19,7 +19,7 @@ class Exception extends \Exception
 
     public function __toString()
     {
-        return get_class($this).($this->message !== '' ? ': ' : '').$this->message.PHP_EOL.@file_get_contents(__DIR__.'/../../../.git/refs/heads/master').PHP_EOL.'TL Trace (YOU ABSOLUTELY MUST READ THE TEXT BELOW):'.PHP_EOL.PHP_EOL.$this->getTLTrace().PHP_EOL;
+        return get_class($this). ($this->message !== '' ? ': ' : '').$this->message.PHP_EOL.@file_get_contents(__DIR__.'/../../../.git/refs/heads/master').PHP_EOL.'TL Trace (YOU ABSOLUTELY MUST READ THE TEXT BELOW):'.PHP_EOL.PHP_EOL.$this->getTLTrace().PHP_EOL;
     }
 
     public function __construct($message, $file = '')
diff --git a/src/danog/MadelineProto/TL/TL.php b/src/danog/MadelineProto/TL/TL.php
index 8ef48046..13b72bfe 100644
--- a/src/danog/MadelineProto/TL/TL.php
+++ b/src/danog/MadelineProto/TL/TL.php
@@ -597,7 +597,7 @@ trait TL
                         stream_get_contents($stream, $resto);
                     }
                 } else {
-                    $x = stream_get_contents($stream, $l);
+                    $x = $l ? stream_get_contents($stream, $l) : '';
                     $resto = $this->posmod(-($l + 1), 4);
                     if ($resto > 0) {
                         stream_get_contents($stream, $resto);
diff --git a/tests/makephar.sh b/tests/makephar.sh
index 1bf15bb2..4e6216cf 100755
--- a/tests/makephar.sh
+++ b/tests/makephar.sh
@@ -32,6 +32,7 @@ composer update
 cd ..
 
 $php7to5 convert --copy-all phar7 phar5 >/dev/null
+find phar5 -type f -exec sed 's/\w* \.\.\./.../' -i {} +
 
 [ "$TRAVIS_BRANCH" != "master" ] && branch="-$TRAVIS_BRANCH" || branch=""
 
diff --git a/tests/makephardebug.sh b/tests/makephardebug.sh
index 3fb0d60a..6b566823 100755
--- a/tests/makephardebug.sh
+++ b/tests/makephardebug.sh
@@ -32,6 +32,7 @@ cp -a ../src vendor/danog/madelineproto
 cd ..
 
 $php7to5 convert --copy-all phar7 phar5 >/dev/null
+find phar5 -type f -exec sed 's/\w* \.\.\./.../' -i {} +
 
 php makephar.php phar5 madeline.phar $(cat .git/refs/heads/master)