diff --git a/communications.php b/communications.php
index 5b3103d..55514ed 100644
--- a/communications.php
+++ b/communications.php
@@ -9,7 +9,7 @@ include_once './assets/functions.php';
 include_once './settings/settings.php';
 
 //SET PAGE ORIGIN FOR NAVIGATION AND SECURITY
-$prev_page = ($_SESSION['origin'] == 'equipments') ? $_SESSION['prev_origin_equipment'] : (($_SESSION['origin'] == 'account')? $_SESSION['prev_origin'] :'');
+$prev_page = (isset($_SESSION['origin']) && $_SESSION['origin'] == 'equipments') ? $_SESSION['prev_origin_equipment'] : ((isset($_SESSION['origin']) && $_SESSION['origin'] == 'account')? $_SESSION['prev_origin'] :'');
 $page = 'communications';
 
 //create backbutton to prev_origin
diff --git a/users.php b/users.php
index b3a2595..1bf6efb 100644
--- a/users.php
+++ b/users.php
@@ -9,7 +9,7 @@ include_once './assets/functions.php';
 include_once './settings/settings.php';
 
 //SET PAGE ORIGIN FOR NAVIGATION AND SECURITY
-$prev_page = ($_SESSION['origin'] == 'equipments') ? $_SESSION['prev_origin_equipment'] : (($_SESSION['origin'] == 'account')?$_SESSION['prev_origin'] :'');
+$prev_page = (isset($_SESSION['origin']) && $_SESSION['origin'] == 'equipments') ? $_SESSION['prev_origin_equipment'] : ((isset($_SESSION['origin']) && $_SESSION['origin'] == 'account')? $_SESSION['prev_origin'] :'');
 $page = 'users';
 
 //create backbutton to prev_origin