diff --git a/addons/web_kanban/static/src/less/kanban_view.less b/addons/web_kanban/static/src/less/kanban_view.less
index 263bc073fad..edbf9da2ff3 100644
--- a/addons/web_kanban/static/src/less/kanban_view.less
+++ b/addons/web_kanban/static/src/less/kanban_view.less
@@ -278,7 +278,7 @@
 
         .o_kanban_attachment_image {
             // The image should take the whole card
-            margin: -8px;
+            margin: 0 -8px -8px;
             > img {
                 width: 100%;
             }