diff --git a/DBupdate.php b/DBupdate.php
new file mode 100644
index 00000000..29a14b65
--- /dev/null
+++ b/DBupdate.php
@@ -0,0 +1,10 @@
+<?php
+require_once "core/compat.inc.php";
+require_once "core/database.class.php";
+include_once "config.php";
+$db = new Database();
+echo "Fixing user_favorites table....";
+($db->Execute("ALTER TABLE user_favorites ENGINE=InnoDB;")) ? print_r("ok<br>") : print_r("failed<br>");
+echo "adding Foreign key to users...";
+($db->Execute("ALTER TABLE user_favorites ADD FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE;"))? print_r("ok<br>"):print_r("failed<br>");
+?>
\ No newline at end of file
diff --git a/contrib/favorites/main.php b/contrib/favorites/main.php
index f6c6ef5b..ad37edd0 100644
--- a/contrib/favorites/main.php
+++ b/contrib/favorites/main.php
@@ -144,8 +144,10 @@ class Favorites extends SimpleExtension {
 					image_id INTEGER NOT NULL,
 					user_id INTEGER NOT NULL,
 					created_at DATETIME NOT NULL,
+					INDEX(image_id),
 					UNIQUE(image_id, user_id),
-					INDEX(image_id)
+					FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+					FOREIGN KEY (image_id) REFERENCES images(id) ON DELETE CASCADE
 				)
 			");
 			$config->set_int("ext_favorites_version", 1);