diff --git a/ext/queue/beanstalk.c b/ext/queue/beanstalk.c
index 5b3d1b15d08..cc8b1e30246 100644
--- a/ext/queue/beanstalk.c
+++ b/ext/queue/beanstalk.c
@@ -74,7 +74,7 @@ PHALCON_INIT_CLASS(Phalcon_Queue_Beanstalk){
  */
 PHP_METHOD(Phalcon_Queue_Beanstalk, __construct){
 
-	zval *options = NULL, *parameters = NULL;
+	zval *options = NULL, *parameters = NULL, *tmp;
 
 	PHALCON_MM_GROW();
 
@@ -86,20 +86,26 @@ PHP_METHOD(Phalcon_Queue_Beanstalk, __construct){
 	
 	if (Z_TYPE_P(options) != IS_ARRAY) { 
 		PHALCON_INIT_VAR(parameters);
-		array_init(parameters);
+		array_init_size(parameters, 2);
 	} else {
-		PHALCON_CPY_WRT(parameters, options);
+		PHALCON_CPY_WRT_CTOR(parameters, options);
 	}
-	if (!phalcon_array_isset_string(parameters, SS("host"))) {
-		phalcon_array_update_string_string(&parameters, SL("host"), SL("127.0.0.1"), PH_SEPARATE);
+
+	if (!phalcon_array_isset_string_fetch(&tmp, parameters, SS("host"))) {
+		phalcon_array_update_string_string(&parameters, SL("host"), SL("127.0.0.1"), 0);
+	}
+	else {
+		convert_to_string(tmp);
 	}
 	
-	if (!phalcon_array_isset_string(parameters, SS("port"))) {
-		phalcon_array_update_string_long(&parameters, SL("port"), 11300, PH_SEPARATE);
+	if (!phalcon_array_isset_string_fetch(&tmp, parameters, SS("port"))) {
+		phalcon_array_update_string_long(&parameters, SL("port"), 11300, 0);
+	}
+	else {
+		convert_to_long(tmp);
 	}
 	
 	phalcon_update_property_this(this_ptr, SL("_parameters"), parameters TSRMLS_CC);
-	
 	PHALCON_MM_RESTORE();
 }
 
@@ -600,3 +606,35 @@ PHP_METHOD(Phalcon_Queue_Beanstalk, disconnect){
 	RETURN_TRUE;
 }
 
+PHP_METHOD(Phalcon_Queue_Beanstalk, __sleep){
+
+	array_init_size(return_value, 1);
+	add_next_index_string(return_value, "_parameters", 1);
+}
+
+PHP_METHOD(Phalcon_Queue_Beanstalk, __wakeup){
+
+	zval *params, *host, *port;
+	int fail;
+
+	zend_update_property_null(phalcon_queue_beanstalk_ce, getThis(), SL("_connection") TSRMLS_CC);
+
+	params = phalcon_fetch_nproperty_this(this_ptr, SL("_parameters"), PH_NOISY_CC);
+	if (
+			Z_TYPE_P(params) != IS_ARRAY
+		 || !phalcon_array_isset_string_fetch(&host, params, SS("host"))
+		 || !phalcon_array_isset_string_fetch(&port, params, SS("port"))
+	) {
+		fail = 1;
+	}
+	else if (Z_TYPE_P(host) != IS_STRING || Z_TYPE_P(port) != IS_LONG) {
+		fail = 1;
+	}
+	else {
+		fail = 0;
+	}
+
+	if (fail) {
+		zend_throw_exception_ex(phalcon_exception_ce, 0 TSRMLS_CC, "Invalid serialization data");
+	}
+}
diff --git a/ext/queue/beanstalk.h b/ext/queue/beanstalk.h
index 6d957239c3d..928c45ec9a7 100644
--- a/ext/queue/beanstalk.h
+++ b/ext/queue/beanstalk.h
@@ -32,6 +32,8 @@ PHP_METHOD(Phalcon_Queue_Beanstalk, readStatus);
 PHP_METHOD(Phalcon_Queue_Beanstalk, read);
 PHP_METHOD(Phalcon_Queue_Beanstalk, write);
 PHP_METHOD(Phalcon_Queue_Beanstalk, disconnect);
+PHP_METHOD(Phalcon_Queue_Beanstalk, __sleep);
+PHP_METHOD(Phalcon_Queue_Beanstalk, __wakeup);
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_phalcon_queue_beanstalk___construct, 0, 0, 0)
 	ZEND_ARG_INFO(0, options)
@@ -70,6 +72,8 @@ PHALCON_INIT_FUNCS(phalcon_queue_beanstalk_method_entry){
 	PHP_ME(Phalcon_Queue_Beanstalk, read, arginfo_phalcon_queue_beanstalk_read, ZEND_ACC_PUBLIC) 
 	PHP_ME(Phalcon_Queue_Beanstalk, write, NULL, ZEND_ACC_PROTECTED) 
 	PHP_ME(Phalcon_Queue_Beanstalk, disconnect, NULL, ZEND_ACC_PUBLIC) 
+	PHP_ME(Phalcon_Queue_Beanstalk, __sleep, NULL, ZEND_ACC_PUBLIC)
+	PHP_ME(Phalcon_Queue_Beanstalk, __wakeup, NULL, ZEND_ACC_PUBLIC)
 	PHP_FE_END
 };
 
diff --git a/ext/tests/issue-1635.phpt b/ext/tests/issue-1635.phpt
new file mode 100644
index 00000000000..836920d8ad8
--- /dev/null
+++ b/ext/tests/issue-1635.phpt
@@ -0,0 +1,73 @@
+--TEST--
+Safe serialization/unserialization of Phalcon\Beanstalk\Queue - https://github.com/phalcon/cphalcon/pull/1635
+--SKIPIF--
+<?php include('skipif.inc'); ?>
+--FILE--
+<?php
+
+class Test extends \Phalcon\Queue\Beanstalk
+{
+	public function getParams()
+	{
+		return $this->_parameters;
+	}
+
+	public function getConnection()
+	{
+		return $this->_connection;
+	}
+
+	public function setParams($v)
+	{
+		$this->_parameters = $v;
+	}
+
+	public function setConnection($v)
+	{
+		$this->_connection = $v;
+	}
+}
+
+$x = new \Test(array('host' => 127, 'port' => '11300'));
+var_dump($x->getParams());
+
+$x->setConnection(123.0);
+assert($x->getConnection() === 123.0);
+var_export(serialize($x));
+echo PHP_EOL;
+
+$s = 'O:4:"Test":2:{s:14:"' . "\0" . '*' . "\0" . '_connection";d:123;s:14:"' . "\0" . '*' . "\0" . '_parameters";a:2:{s:4:"host";s:3:"127";s:4:"port";i:11300;}}';
+$x = unserialize($s);
+var_dump($x->getConnection());
+
+$samples = array(
+	'O:4:"Test":1:{s:14:"' . "\0" . '*' . "\0" . '_parameters";a:2:{s:4:"Host";s:3:"127";s:4:"port";i:11300;}}',
+	'O:4:"Test":1:{s:14:"' . "\0" . '*' . "\0" . '_parameters";a:2:{s:4:"host";s:3:"127";s:4:"Port";i:11300;}}',
+	'O:4:"Test":1:{s:14:"' . "\0" . '*' . "\0" . '_parameters";a:2:{s:4:"host";i:127;s:4:"port";i:11300;}}',
+	'O:4:"Test":1:{s:14:"' . "\0" . '*' . "\0" . '_parameters";a:2:{s:4:"host";s:3:"127";s:4:"port";s:5:"11300";}}',
+);
+
+foreach ($samples as $sample) {
+	try {
+		unserialize($sample);
+		assert(false);
+	}
+	catch (\Phalcon\Exception $e) {
+		echo $e->getMessage(), PHP_EOL;
+	}
+}
+
+?>
+--EXPECT--
+array(2) {
+  ["host"]=>
+  string(3) "127"
+  ["port"]=>
+  int(11300)
+}
+'O:4:"Test":1:{s:14:"' . "\0" . '*' . "\0" . '_parameters";a:2:{s:4:"host";s:3:"127";s:4:"port";i:11300;}}'
+NULL
+Invalid serialization data
+Invalid serialization data
+Invalid serialization data
+Invalid serialization data