diff --git a/app/devices/device_edit.php b/app/devices/device_edit.php
index a9861e6422..84c101e1ad 100644
--- a/app/devices/device_edit.php
+++ b/app/devices/device_edit.php
@@ -217,7 +217,7 @@ require_once "resources/require.php";
 
 				//array cleanup
 					$x = 0;
-					unset($_POST["autocomplete"][$x]);
+					unset($_POST["autocomplete"]);
 					foreach ($_POST["device_lines"] as $row) {
 						//unset the empty row
 							if (strlen($row["line_number"]) == 0) {