1 files changed, 1 insertions, 1 deletions
diff --git a/core/Updates/1.10-b4.php b/core/Updates/1.10-b4.php
index 5460b7f540..59ae4cda68 100755
--- a/core/Updates/1.10-b4.php
+++ b/core/Updates/1.10-b4.php
@@ -22,7 +22,7 @@ class Piwik_Updates_1_10_b4 extends Piwik_Updates
     static function update()
     {
         try {
-            PluginsManager::getInstance()->activatePlugin('MobileMessaging');
+            \Piwik\PluginsManager::getInstance()->activatePlugin('MobileMessaging');
         } catch (Exception $e) {
             // pass
         }