diff --git a/resources/screen-common.less b/resources/screen-common.less
index 3eb3e9c..495ea2f 100644
--- a/resources/screen-common.less
+++ b/resources/screen-common.less
@@ -439,7 +439,8 @@ ul {
 	font-size: 95%;
 	padding: 0.5em 1em;
 }
-.thumbinner .thumbimage {
+.thumbinner .thumbimage,
+.thumbborder {
 	border: solid 1px @grey-bright;
 }
 #mw-content li.gallerybox div.thumb {