diff --git a/Sources/Likes.php b/Sources/Likes.php
index dd907f9d24..103e8791ae 100644
--- a/Sources/Likes.php
+++ b/Sources/Likes.php
@@ -344,7 +344,7 @@ protected function insert()
 		call_integration_hook('integrate_issue_like_before', array(&$type, &$content, &$user, &$time));
 
 		// Insert the like.
-		$smcFunc['db_insert']('insert',
+		$smcFunc['db_insert']('ignore',
 			'{db_prefix}user_likes',
 			array('content_id' => 'int', 'content_type' => 'string-6', 'id_member' => 'int', 'like_time' => 'int'),
 			array($content, $type, $user['id'], $time),