diff --git a/ext/image/main.php b/ext/image/main.php
index d30752cb..51ce3284 100644
--- a/ext/image/main.php
+++ b/ext/image/main.php
@@ -348,7 +348,7 @@ class ImageIO extends Extension
                 $page->add_http_header('Expires: ' . $expires);
             }
 
-            send_event(new ImageDownloadingEvent($image, $file, $image->get_mime()));
+            send_event(new ImageDownloadingEvent($image, $file, $mime));
         } else {
             $page->set_title("Not Found");
             $page->set_heading("Not Found");