diff --git a/css/islandora.base.css b/css/islandora.base.css
index 28301aa1..7b548289 100644
--- a/css/islandora.base.css
+++ b/css/islandora.base.css
@@ -5,7 +5,8 @@
         Purpose of the stylesheet follows.
 */
 
-.islandora img {
+.islandora img,
+.islandora-object-thumb img {
   max-width: 100%;
   *width: 100%;
 }