make sure class file is loaded once

diff --git a/lib/private/migrate.php b/lib/private/migrate.php
index 8d88181ca195fb63a35a3ec0ea0cc7cd37aaf89a..8351155aa55758ac0f0c850703faf8d30a09b9e8 100644 (file)
--- a/lib/private/migrate.php
+++ b/lib/private/migrate.php
@@ -62,7 +62,7 @@ class OC_Migrate{
                foreach($apps as $app) {
                        $path = OC_App::getAppPath($app) . '/appinfo/migrate.php';
                        if( file_exists( $path ) ) {
-                               include $path;
+                               include_once $path;
                        }
                }
        }