diff --git a/app/destinations/destination_edit.php b/app/destinations/destination_edit.php
index 481bf7fa69..652ec2ec13 100644
--- a/app/destinations/destination_edit.php
+++ b/app/destinations/destination_edit.php
@@ -550,7 +550,7 @@ if (count($_POST) > 0 && strlen($_POST["persistformvar"]) == 0) {
 	echo "	".$text['label-destination_number'].":\n";
 	echo "</td>\n";
 	echo "<td class='vtable' align='left'>\n";
-	echo "	<input class='formfld' type='text' name='destination_number' maxlength='255' value=\"$destination_number\">\n";
+	echo "	<input class='formfld' type='text' name='destination_number' maxlength='255' value=\"$destination_number\" required='required'>\n";
 	echo "<br />\n";
 	echo $text['description-destination_number']."\n";
 	echo "</td>\n";
@@ -573,7 +573,7 @@ if (count($_POST) > 0 && strlen($_POST["persistformvar"]) == 0) {
 		echo "	".$text['label-destination_caller_id_number'].":\n";
 		echo "</td>\n";
 		echo "<td class='vtable' align='left'>\n";
-		echo "	<input class='formfld' type='text' name='destination_caller_id_number' maxlength='255' value=\"$destination_caller_id_number\">\n";
+		echo "	<input class='formfld' type='number' name='destination_caller_id_number' maxlength='255' min='0' step='1' value=\"$destination_caller_id_number\">\n";
 		echo "<br />\n";
 		echo $text['description-destination_caller_id_number']."\n";
 		echo "</td>\n";
@@ -781,4 +781,4 @@ if (count($_POST) > 0 && strlen($_POST["persistformvar"]) == 0) {
 //include the footer
 	require_once "resources/footer.php";
 
-?>
\ No newline at end of file
+?>