diff --git a/app/fifo/fifo_add.php b/app/fifo/fifo_add.php
index 40acf2955f..57e0ad23e4 100644
--- a/app/fifo/fifo_add.php
+++ b/app/fifo/fifo_add.php
@@ -22,6 +22,7 @@
 
 	Contributor(s):
 	Mark J Crane <markjcrane@fusionpbx.com>
+	Luis Daniel Lucio Quiroz <dlucio@okay.com.mx>
 */
 include "root.php";
 require_once "resources/require.php";
@@ -320,7 +321,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 	echo "		".$text['label-name'].":\n";
 	echo "	</td>\n";
 	echo "	<td class='vtable' align='left'>\n";
-	echo "		<input class='formfld' style='width: 60%;' type='text' name='extension_name' maxlength='255' value=\"$extension_name\">\n";
+	echo "		<input class='formfld' style='width: 60%;' type='text' name='extension_name' maxlength='255' value=\"$extension_name\" required='required'>\n";
 	echo "		<br />\n";
 	echo "		".$text['description-name']."\n";
 	echo "	</td>\n";
@@ -331,7 +332,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 	echo "	".$text['label-extension'].":\n";
 	echo "	</td>\n";
 	echo "	<td class='vtable' align='left'>\n";
-	echo "		<input class='formfld' style='width: 60%;' type='text' name='queue_extension_number' maxlength='255' value=\"$queue_extension_number\">\n";
+	echo "		<input class='formfld' style='width: 60%;' type='number' name='queue_extension_number' maxlength='255' min='0' step='1' value=\"$queue_extension_number\" required='required'>\n";
 	echo "		<br />\n";
 	echo "		".$text['description-extension']."\n";
 	echo "	</td>\n";
@@ -406,7 +407,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 	echo "    ".$text['label-agent_queue_extension'].":\n";
 	echo "</td>\n";
 	echo "<td class='vtable' align='left'>\n";
-	echo "    <input class='formfld' style='width: 60%;' type='text' name='agent_queue_extension_number' maxlength='255' value=\"$agent_queue_extension_number\">\n";
+	echo "    <input class='formfld' style='width: 60%;' type='number' name='agent_queue_extension_number' maxlength='255' min='0' step='1' value=\"$agent_queue_extension_number\">\n";
 	echo "<br />\n";
 	echo $text['description-agent_queue_extension']."\n";
 	echo "</td>\n";
@@ -417,7 +418,7 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 	echo "    ".$text['label-agent_loginout_extension'].":\n";
 	echo "</td>\n";
 	echo "<td class='vtable' align='left'>\n";
-	echo "    <input class='formfld' style='width: 60%;' type='text' name='agent_login_logout_extension_number' maxlength='255' value=\"$agent_login_logout_extension_number\">\n";
+	echo "    <input class='formfld' style='width: 60%;' type='number' name='agent_login_logout_extension_number' maxlength='255' min='0' step='1' value=\"$agent_login_logout_extension_number\">\n";
 	echo "<br />\n";
 	echo $text['description-agent_loginout_extension']."\n";
 	echo "</td>\n";
@@ -446,4 +447,4 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 
 //show the footer
 	require_once "resources/footer.php";
-?>
\ No newline at end of file
+?>