diff --git a/lib/parse.js b/lib/parse.js
index 6d8b877..3c2d4bf 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -15,8 +15,17 @@ module.exports = function parse(xml, rooms) {
 	const days = $('day').map((i, day) => {
 		const $day = $(day);
 		const events = $day.find('room').filter((i, room) => {
-			return filterRooms ? rooms.indexOf($(room).attr('name')) !== -1 : true;
-		}).find('event').map((i, event) => {
+			const children = $(room).children();
+			if (children.length == 0 || $(room).children()[0].tagName !== 'event') {
+				return false;
+			} else if (filterRooms) {
+				return rooms.indexOf($(room).attr('name')) !== -1;
+			} else {
+				return true;
+			}
+		})
+		.find('event')
+		.map((i, event) => {
 			const $event = $(event);
 			const t = (selector) => $event.find(selector).text() || null;