diff --git a/themes/futaba/view.theme.php b/themes/futaba/view.theme.php
index 0c6261a5..c8c3519b 100644
--- a/themes/futaba/view.theme.php
+++ b/themes/futaba/view.theme.php
@@ -1,7 +1,7 @@
 <?php
 
 class CustomViewImageTheme extends ViewImageTheme {
-	public function display_page($image, $editor_parts) {
+	public function display_page(Image $image, $editor_parts) {
 		global $page;
 		$page->set_title("Image {$image->id}: ".html_escape($image->get_tag_list()));
 		$page->set_heading(html_escape($image->get_tag_list()));