2 files changed, 29 insertions, 1 deletions
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index 10fb57ea97..83316be2a3 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -1949,6 +1949,27 @@ function validate_jabber($jid)
 }
 
 /**
+* Verifies whether a style ID corresponds to an active style.
+*
+* @param int $style_id The style_id of a style which should be checked if activated or not.
+* @return boolean
+*/
+function phpbb_style_is_active($style_id)
+{
+	global $db;
+
+	$sql = 'SELECT style_active
+		FROM ' . STYLES_TABLE . '
+		WHERE style_id = '. (int) $style_id;
+	$result = $db->sql_query($sql);
+
+	$style_is_active = (bool) $db->sql_fetchfield('style_active');
+	$db->sql_freeresult($result);
+
+	return $style_is_active;
+}
+
+/**
 * Remove avatar
 */
 function avatar_delete($mode, $row, $clean_db = false)
diff --git a/phpBB/includes/ucp/ucp_prefs.php b/phpBB/includes/ucp/ucp_prefs.php
index 13167b2b3d..17d7d23f02 100644
--- a/phpBB/includes/ucp/ucp_prefs.php
+++ b/phpBB/includes/ucp/ucp_prefs.php
@@ -61,7 +61,14 @@ class ucp_prefs
 
 				if ($submit)
 				{
-					$data['style'] = ($config['override_user_style']) ? $config['default_style'] : $data['style'];
+					if ($config['override_user_style'])
+					{
+						$data['style'] = (int) $config['default_style'];
+					}
+					else if (!phpbb_style_is_active($data['style']))
+					{
+						$data['style'] = (int) $user->data['user_style'];
+					}
 
 					$error = validate_data($data, array(
 						'dateformat'	=> array('string', false, 1, 30),