diff --git a/tailbone/templates/purchases/batches/order_form.mako b/tailbone/templates/purchases/batches/order_form.mako
index 32f1d291..f2fb6d5c 100644
--- a/tailbone/templates/purchases/batches/order_form.mako
+++ b/tailbone/templates/purchases/batches/order_form.mako
@@ -7,6 +7,9 @@
   ${parent.extra_javascript()}
   ${h.javascript_link(request.static_url('tailbone:static/js/numeric.js'))}
   <script type="text/javascript">
+
+    var submitting = false;
+
     $(function() {
 
         $('.order-form td.current-order input').keydown(function(event) {
@@ -14,21 +17,25 @@
                 return true;
             }
             if (event.which == 13) {
-                var row = $(this).parents('tr:first');
-                var form = $('#item-update-form');
-                form.find('[name="product_uuid"]').val(row.data('uuid'));
-                form.find('[name="cases_ordered"]').val(row.find('input[name^="cases_ordered_"]').val() || '0');
-                form.find('[name="units_ordered"]').val(row.find('input[name^="units_ordered_"]').val() || '0');
-                $.post(form.attr('action'), form.serialize(), function(data) {
-                    if (data.error) {
-                        alert(data.error);
-                    } else {
-                        row.find('input[name^="cases_ordered_"]').val(data.row_cases_ordered);
-                        row.find('input[name^="units_ordered_"]').val(data.row_units_ordered);
-                        row.find('td.po-total').html(data.row_po_total);
-                        $('.po-total .field').html(data.batch_po_total);
-                    }
-                });
+                if (! submitting) {
+                    submitting = true;
+                    var row = $(this).parents('tr:first');
+                    var form = $('#item-update-form');
+                    form.find('[name="product_uuid"]').val(row.data('uuid'));
+                    form.find('[name="cases_ordered"]').val(row.find('input[name^="cases_ordered_"]').val() || '0');
+                    form.find('[name="units_ordered"]').val(row.find('input[name^="units_ordered_"]').val() || '0');
+                    $.post(form.attr('action'), form.serialize(), function(data) {
+                        if (data.error) {
+                            alert(data.error);
+                        } else {
+                            row.find('input[name^="cases_ordered_"]').val(data.row_cases_ordered);
+                            row.find('input[name^="units_ordered_"]').val(data.row_units_ordered);
+                            row.find('td.po-total').html(data.row_po_total);
+                            $('.po-total .field').html(data.batch_po_total);
+                        }
+                        submitting = false;
+                    });
+                }
             }
             return false;
         });