diff --git a/addons/project/static/src/scss/project_sharing/chatter.scss b/addons/project/static/src/scss/project_sharing/chatter.scss
index 9089bc0bb73..88f1d1262b4 100644
--- a/addons/project/static/src/scss/project_sharing/chatter.scss
+++ b/addons/project/static/src/scss/project_sharing/chatter.scss
@@ -18,6 +18,15 @@
 
                 .o_portal_chatter_attachments {
                     margin-bottom: 1rem;
+                    .o_portal_chatter_attachment {
+                        .o_portal_chatter_attachment_delete {
+                            @include o-position-absolute($top: 0, $right: 0);
+                            opacity: 0;
+                        }
+                        &:hover .o_portal_chatter_attachment_delete {
+                            opacity: 1;
+                        }
+                    }
                 }
             }
         }