diff --git a/src/assets/netteForms.js b/src/assets/netteForms.js
index 06aad6ef7..8d6e7d632 100644
--- a/src/assets/netteForms.js
+++ b/src/assets/netteForms.js
@@ -640,7 +640,7 @@
 	 * Displays or hides HTML element.
 	 */
 	Nette.toggle = function(selector, visible, srcElement) { // eslint-disable-line no-unused-vars
-		if (/^\w+$/.test(selector)) { // id
+		if (/^\w[\w\d_.,-]*$/.test(selector)) { // id
 			selector = '#' + selector;
 		}
 		var elems = document.querySelectorAll(selector);