diff --git a/app/fax/fax_edit.php b/app/fax/fax_edit.php
index 65934c263..4f0e3ce68 100644
--- a/app/fax/fax_edit.php
+++ b/app/fax/fax_edit.php
@@ -464,8 +464,8 @@
 	echo "	<td align='left' width='30%' valign='top' nowrap='nowrap'><b>".$text['header-fax_server_settings']."</b><br><br></td>\n";
 	echo "	<td width='70%' valign='top' align='right'>\n";
 	echo "		<input type='button' class='btn' name='' alt=\"".$text['button-back']."\" onclick=\"window.location='fax.php'\" value=\"".$text['button-back']."\">\n";
-	if ((if_group("admin") || if_group("superadmin")) && $action == "update") {
-		echo "	<input type='button' class='btn' alt=\"".$text['button-copy']."\" onclick=\"if (confirm('".$text['confirm-copy-info']."')){window.location='fax_copy.php?id=".$fax_uuid."';}\" value=\"".$text['button-copy']."\">\n";
+	if (permission_exists('fax_extension_copy') && $action == "update") {
+		echo "	<input type='button' class='btn' alt=\"".$text['button-copy']."\" onclick=\"if (confirm('".$text['confirm-copy-info']."')){window.location='fax_copy.php?id=".urlencode($fax_uuid)."';}\" value=\"".$text['button-copy']."\">\n";
 	}
 	echo "		<input type='submit' class='btn' name='submit' value='".$text['button-save']."'>\n";
 	echo "	</td>\n";
@@ -616,7 +616,7 @@
 						echo "		<tr>\n";
 						echo "			<td class='vtable'>".escape($field['username'])."</td>\n";
 						echo "			<td>\n";
-						echo "				<a href='fax_edit.php?id=".escape($fax_uuid)."&domain_uuid=".$_SESSION['domain_uuid']."&user_uuid=".$field['user_uuid']."&a=delete' alt='delete' onclick=\"return confirm('".$text['confirm-delete']."')\">$v_link_label_delete</a>\n";
+						echo "				<a href='fax_edit.php?id=".escape($fax_uuid)."&domain_uuid=".urlencode($_SESSION['domain_uuid'])."&user_uuid=".urlencode($field['user_uuid'])."&a=delete' alt='delete' onclick=\"return confirm('".$text['confirm-delete']."')\">$v_link_label_delete</a>\n";
 						echo "			</td>\n";
 						echo "		</tr>\n";
 					}