diff --git a/usr/local/www/interfaces.php b/usr/local/www/interfaces.php
index dc0198c076..55f02a444c 100644
--- a/usr/local/www/interfaces.php
+++ b/usr/local/www/interfaces.php
@@ -3298,7 +3298,7 @@ $types6 = array("none" => gettext("None"), "staticv6" => gettext("Static IPv6"),
 							<td width="78%">
 								<br />
 								<input id="save" name="Submit" type="submit" class="formbtn" value="<?=gettext("Save"); ?>" />
-								<input type="button" class="formbtn" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
+								<input id="cancel" type="button" class="formbtn" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
 								<input name="if" type="hidden" id="if" value="<?=htmlspecialchars($if);?>" />
 								<?php if ($wancfg['if'] == $a_ppps[$pppid]['if']) : ?>
 								<input name="ppp_port" type="hidden" value="<?=htmlspecialchars($pconfig['port']);?>" />