diff --git a/phpBB/includes/user.php b/phpBB/includes/user.php
index 9ddd806b27..5530fe3f03 100644
--- a/phpBB/includes/user.php
+++ b/phpBB/includes/user.php
@@ -215,7 +215,7 @@ class phpbb_user extends phpbb_session
 
 		if (!$this->style)
 		{
-			trigger_error('Could not get style data', E_USER_ERROR);
+			trigger_error('NO_STYLE_DATA', E_USER_ERROR);
 		}
 
 		// Now parse the cfg file and cache it
diff --git a/phpBB/language/en/common.php b/phpBB/language/en/common.php
index 5d6fe03b5f..ebf121bf90 100644
--- a/phpBB/language/en/common.php
+++ b/phpBB/language/en/common.php
@@ -454,6 +454,7 @@ $lang = array_merge($lang, array(
 	'NO_POSTS_TIME_FRAME'		=> 'No posts exist inside this topic for the selected time frame.',
 	'NO_FEED_ENABLED'			=> 'Feeds are not available on this board.',
 	'NO_FEED'					=> 'The requested feed is not available.',
+	'NO_STYLE_DATA'				=> 'Could not get style data',
 	'NO_SUBJECT'				=> 'No subject specified',								// Used for posts having no subject defined but displayed within management pages.
 	'NO_SUCH_SEARCH_MODULE'		=> 'The specified search backend doesn’t exist.',
 	'NO_SUPPORTED_AUTH_METHODS'	=> 'No supported authentication methods.',