diff --git a/src/Images/ImageExpand.coffee b/src/Images/ImageExpand.coffee
index 2d0eb8aef..8d62c47d7 100644
--- a/src/Images/ImageExpand.coffee
+++ b/src/Images/ImageExpand.coffee
@@ -178,6 +178,7 @@ ImageExpand =
       el.src = src or file.url
 
     el.className = 'full-image'
+    $.addClass el, 'expanded-thumb' if $.hasClass doc, 'md2016'
     $.after thumb, el
 
     if isVideo