diff --git a/frontends/etiquette_flask/templates/photo.html b/frontends/etiquette_flask/templates/photo.html
index 719caaf..2e14a22 100644
--- a/frontends/etiquette_flask/templates/photo.html
+++ b/frontends/etiquette_flask/templates/photo.html
@@ -357,7 +357,7 @@ function disable_hoverzoom()
     photo_img_holder.onmousemove = null;
     //photo_img_holder.onclick = null;
 }
-function toggle_hoverzoom()
+function toggle_hoverzoom(event)
 {
     if (photo_img.style.opacity === "0")
     {