diff --git a/lib/user.js b/lib/user.js
index 5cbc7879..a57d2b83 100644
--- a/lib/user.js
+++ b/lib/user.js
@@ -314,7 +314,7 @@ Volcanos("user", {
 		})
 		title && can.page.Select(can, action._target, "input[name=submit]", function(target) { target.value = can.user.trans(can, title) })
 		action.layout(event), can.onmotion.delay(can, function() { action.focus() }, 300)
-		function callback(key, button) { var sub = can._fields? can: can.sub; sub.onaction && sub.onaction[key] && sub.onaction[key](event, sub, button, action) }
+		function callback(key, button) { var sub = can._fields? can: can.sub; sub && sub.onaction && sub.onaction[key] && sub.onaction[key](event, sub, button, action) }
 		callback("beforeInputs")
 		// ui._target._layout = action.layout
 		return button === true && action.submit(event, can, html.SUBMIT), action