diff --git a/phpseclib/Crypt/Common/AsymmetricKey.php b/phpseclib/Crypt/Common/AsymmetricKey.php
index 08124730..6cc92471 100644
--- a/phpseclib/Crypt/Common/AsymmetricKey.php
+++ b/phpseclib/Crypt/Common/AsymmetricKey.php
@@ -299,7 +299,7 @@ abstract class AsymmetricKey
      * @access private
      * @param string $key
      * @param string $type
-     * @return array
+     * @return array|bool
      */
     protected function load($key, $type)
     {
@@ -339,7 +339,7 @@ abstract class AsymmetricKey
      * @access private
      * @param string $key
      * @param string $type
-     * @return array
+     * @return array|bool
      */
     protected function setPublicKey($key, $type)
     {
diff --git a/phpseclib/Crypt/Common/Keys/OpenSSH.php b/phpseclib/Crypt/Common/Keys/OpenSSH.php
index eb1ba7a3..fc7fc822 100644
--- a/phpseclib/Crypt/Common/Keys/OpenSSH.php
+++ b/phpseclib/Crypt/Common/Keys/OpenSSH.php
@@ -64,7 +64,7 @@ abstract class OpenSSH
      * @access public
      * @param string $key
      * @param string $type
-     * @return array
+     * @return array|bool
      */
     public static function load($key, $type)
     {
diff --git a/phpseclib/Crypt/Common/Keys/PKCS1.php b/phpseclib/Crypt/Common/Keys/PKCS1.php
index afa9ad15..6ae8588d 100644
--- a/phpseclib/Crypt/Common/Keys/PKCS1.php
+++ b/phpseclib/Crypt/Common/Keys/PKCS1.php
@@ -122,7 +122,7 @@ abstract class PKCS1 extends PKCS
      * @access public
      * @param string $key
      * @param string $password optional
-     * @return array
+     * @return array|bool
      */
     protected static function load($key, $password)
     {
diff --git a/phpseclib/Crypt/Common/Keys/PKCS8.php b/phpseclib/Crypt/Common/Keys/PKCS8.php
index 74222ab5..e4002fe7 100644
--- a/phpseclib/Crypt/Common/Keys/PKCS8.php
+++ b/phpseclib/Crypt/Common/Keys/PKCS8.php
@@ -320,7 +320,7 @@ abstract class PKCS8 extends PKCS
      * @access public
      * @param string $key
      * @param string $password optional
-     * @return array
+     * @return array|bool
      */
     protected static function load($key, $password = '')
     {
diff --git a/phpseclib/Crypt/Common/Keys/PuTTY.php b/phpseclib/Crypt/Common/Keys/PuTTY.php
index 12e4377a..44224510 100644
--- a/phpseclib/Crypt/Common/Keys/PuTTY.php
+++ b/phpseclib/Crypt/Common/Keys/PuTTY.php
@@ -77,7 +77,7 @@ abstract class PuTTY
      * @param string $publicHandler
      * @param string $type
      * @param string $password
-     * @return array
+     * @return array|bool
      */
     protected static function load($key, $password)
     {
diff --git a/phpseclib/Crypt/Common/Signature/Raw.php b/phpseclib/Crypt/Common/Signature/Raw.php
index 73aeee8a..7977417c 100644
--- a/phpseclib/Crypt/Common/Signature/Raw.php
+++ b/phpseclib/Crypt/Common/Signature/Raw.php
@@ -33,7 +33,7 @@ abstract class Raw
      *
      * @access public
      * @param array $sig
-     * @return array
+     * @return array|bool
      */
     public static function load($sig)
     {