diff --git a/scripts/system_controls.php b/scripts/system_controls.php
index 08b629d..f3aaca0 100644
--- a/scripts/system_controls.php
+++ b/scripts/system_controls.php
@@ -40,7 +40,7 @@ function update() {
     <button type="submit" name="submit" value="sudo reboot" onclick="return confirm('Are you sure you want to reboot?')">Reboot</button>
   </div>
   <div>
-    <button type="submit" name="submit" id="updatebtn" value="update_birdnet.sh" onclick="update();">Update <?php if(isset($_SESSION['behind']) && $_SESSION['behind'] != "0" && $_SESSION['behind'] != "with"){?><div class="updatenumber"><?php echo $_SESSION['behind']; ?></div><?php } ?></button>
+    <button type="submit" name="submit" id="updatebtn" value="update_birdnet.sh" onclick="return update();">Update <?php if(isset($_SESSION['behind']) && $_SESSION['behind'] != "0" && $_SESSION['behind'] != "with"){?><div class="updatenumber"><?php echo $_SESSION['behind']; ?></div><?php } ?></button>
   </div>
   <div>
     <button type="submit" name="submit" value="sudo shutdown now" onclick="return confirm('Are you sure you want to shutdown?')">Shutdown</button>