diff --git a/sapl/templates/sessao/votacao/nominal.html b/sapl/templates/sessao/votacao/nominal.html
index 838747999..ad494dae5 100644
--- a/sapl/templates/sessao/votacao/nominal.html
+++ b/sapl/templates/sessao/votacao/nominal.html
@@ -69,5 +69,10 @@
 		function voltar() {
 			window.history.back();
 		}
+
+		$(window).on('beforeunload', function () {
+            $("input[type=submit], input[type=button]").prop("disabled", "disabled");
+        });
+
 	</script>
 {% endblock extra_js%}