diff --git a/src/wp-admin/css/common.css b/src/wp-admin/css/common.css
index ec65998..69691a0 100644
--- a/src/wp-admin/css/common.css
+++ b/src/wp-admin/css/common.css
@@ -1647,6 +1647,7 @@ td.media-icon {
 }
 
 td.media-icon img {
+	border: 1px solid rgba( 0, 0, 0, 0.1 );
 	max-width: 80px;
 	max-height: 60px;
 }