diff --git a/src/opnsense/mvc/app/views/OPNsense/Diagnostics/traffic.volt b/src/opnsense/mvc/app/views/OPNsense/Diagnostics/traffic.volt
index b0aa25679..6e32dfd6f 100644
--- a/src/opnsense/mvc/app/views/OPNsense/Diagnostics/traffic.volt
+++ b/src/opnsense/mvc/app/views/OPNsense/Diagnostics/traffic.volt
@@ -232,7 +232,7 @@ POSSIBILITY OF SUCH DAMAGE.
          */
         ajaxGet('/api/diagnostics/traffic/interface',{}, function(data, status){
             // XXX: startup selected interfaces load/save in localStorage in a future version
-            let tmp = window.localStorage.getItem("api.diagnostics.traffic.interface");
+            let tmp = window.localStorage ? window.localStorage.getItem("api.diagnostics.traffic.interface") : null;
             let selected_interfaces = ['lan', 'wan'];
             if (tmp !== null) {
                 selected_interfaces = tmp.split(',');
@@ -342,7 +342,9 @@ POSSIBILITY OF SUCH DAMAGE.
         });
 
         $("#interfaces").change(function(){
-            window.localStorage.setItem("api.diagnostics.traffic.interface", $(this).val());
+            if (window.localStorage) {
+                window.localStorage.setItem("api.diagnostics.traffic.interface", $(this).val());
+            }
         });
 
     });