diff --git a/resources/skins.citizen.styles/skinning/interface-message-box.less b/resources/skins.citizen.styles/skinning/interface-message-box.less
index a99758a7..f6a823ff 100644
--- a/resources/skins.citizen.styles/skinning/interface-message-box.less
+++ b/resources/skins.citizen.styles/skinning/interface-message-box.less
@@ -10,6 +10,7 @@
 .mw-message-box {
 	overflow: hidden;
 	padding: var( --space-sm ) var( --space-md );
+	border-radius: var( --border-radius--small );
 	background-color: var( --color-surface-2 );
 	color: var( --color-base--emphasized );
 	/* Standard property is `overflow-wrap` */
@@ -38,3 +39,10 @@
 		background-color: var( --background-color-success );
 	}
 }
+
+#siteNotice {
+	.mw-message-box {
+		// Since it is edge to edge
+		border-radius: 0;
+	}
+}