diff --git a/server_files/model.php b/server_files/model.php
index bdcab22..bf48200 100644
--- a/server_files/model.php
+++ b/server_files/model.php
@@ -298,7 +298,7 @@ function exportProblemsData() {
 
 function displayVideo($link)
 {
-	if (preg_match("#(https?://|)(www\.|)(youtube\.com/watch\?v=|youtu.be/)(.*)#", $link, $matches)) {
+	if (preg_match("#(https?://|)(www\.|)(youtube\.com/watch\?v=|youtu.be/)([a-zA-Z0-9]*)?.*?#", $link, $matches)) {
 		$code = $matches[4];
 		/** @noinspection HtmlDeprecatedAttribute */
 		/** @noinspection HtmlDeprecatedTag */