diff --git a/js/dom-functions.js b/js/dom-functions.js
index 3e412eb..d546465 100644
--- a/js/dom-functions.js
+++ b/js/dom-functions.js
@@ -1026,7 +1026,7 @@ function expand_queet(q,doScrolling) {
 					}
 					else if(attachment_title.indexOf('youtube.com/watch?v=') > -1 || attachment_title.indexOf('://youtu.be/') > -1) {
 						var youtubeId = attachment_title.replace('http://www.youtube.com/watch?v=','').replace('https://www.youtube.com/watch?v=','').replace('http://youtu.be/','').replace('https://youtu.be/','').substr(0,11);
-						if(q.children('.queet').find('.expanded-content').children('.media').children('iframe').attr('src') != '//www.youtube.com/embed/' + youtubeId) { // not if already showed
+						if(q.children('.queet').find('.expanded-content').children('.media').children('iframe[src="//www.youtube.com/embed/' + youtubeId + '"]').length < 1) { // not if already showed
 							q.children('.queet').find('.expanded-content').prepend('<div class="media"><iframe width="420" height="315" src="//www.youtube.com/embed/' + youtubeId + '" frameborder="0" allowfullscreen></iframe></div>');						
 							}
 						}