diff --git a/classes/exceptions/EmptyUrlException.php b/classes/exceptions/EmptyUrlException.php
index cba32db..8af9927 100644
--- a/classes/exceptions/EmptyUrlException.php
+++ b/classes/exceptions/EmptyUrlException.php
@@ -12,7 +12,8 @@ namespace Alltube\Library\Exception;
 class EmptyUrlException extends AlltubeLibraryException
 {
     /**
-     * @var string Error message
+     * Error message.
+     * @var string
      */
     protected $message = 'youtube-dl returned an empty URL.';
 }
diff --git a/classes/exceptions/PlaylistConversionException.php b/classes/exceptions/PlaylistConversionException.php
index 93eb5cb..8ed1b3b 100644
--- a/classes/exceptions/PlaylistConversionException.php
+++ b/classes/exceptions/PlaylistConversionException.php
@@ -8,7 +8,8 @@ namespace Alltube\Library\Exception;
 class PlaylistConversionException extends AlltubeLibraryException
 {
     /**
-     * @var string Error message
+     * Error message.
+     * @var string
      */
     protected $message = 'Conversion of playlists is not supported.';
 }
diff --git a/classes/exceptions/PopenStreamException.php b/classes/exceptions/PopenStreamException.php
index 06d71ea..c70ba38 100644
--- a/classes/exceptions/PopenStreamException.php
+++ b/classes/exceptions/PopenStreamException.php
@@ -8,7 +8,8 @@ namespace Alltube\Library\Exception;
 class PopenStreamException extends AlltubeLibraryException
 {
     /**
-     * @var string Error message
+     * Error message.
+     * @var string
      */
     protected $message = 'Could not open popen stream.';
 }
diff --git a/classes/exceptions/WrongPasswordException.php b/classes/exceptions/WrongPasswordException.php
index b67bbac..110062f 100644
--- a/classes/exceptions/WrongPasswordException.php
+++ b/classes/exceptions/WrongPasswordException.php
@@ -8,7 +8,8 @@ namespace Alltube\Library\Exception;
 class WrongPasswordException extends AlltubeLibraryException
 {
     /**
-     * @var string Error message.
+     * Error message.
+     * @var string
      */
     protected $message = 'Wrong password.';
 }