diff --git a/install.php b/install.php
index 4f538373c..31c92d772 100644
--- a/install.php
+++ b/install.php
@@ -487,7 +487,7 @@ else
     $user = build_user(1, true);
     log_user($user['id'], false);
 
-    $user['preferences']['show_whats_new_'.get_branch(PHPWG_VERSION)] = false;
+    $user['preferences']['show_whats_new_'.get_branch_from_version(PHPWG_VERSION)] = false;
     
     // newsletter subscription
     if ($is_newsletter_subscribe)