diff --git a/src/usr/local/www/system_gateways_edit.php b/src/usr/local/www/system_gateways_edit.php
index 922f96e0f7..280e4bc123 100644
--- a/src/usr/local/www/system_gateways_edit.php
+++ b/src/usr/local/www/system_gateways_edit.php
@@ -323,7 +323,7 @@ $section->addInput(new Form_Input(
 	$pconfig['interval'],
 	[
 		'placeholder' => $dpinger_default['interval'],
-		'max' => 86400000
+		'max' => 3600000
 	]
 ))->setHelp('How often an ICMP probe will be sent in milliseconds. Default is %d.', $dpinger_default['interval']);