diff --git a/CHANGES.rst b/CHANGES.rst
index dde2e5a2..b0f3557d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -20,6 +20,10 @@ New features:
 
 Bug fixes:
 
+- fixed css-classes for thumb scales ...
+  https://github.com/plone/Products.CMFPlone/issues/2077
+  [fgrcon]
+
 - Deprecating getIcon() in @@plone_layout
   see https://github.com/plone/Products.CMFPlone/issues/1734
   [fgrcon]
diff --git a/plone/app/layout/viewlets/document_relateditems.pt b/plone/app/layout/viewlets/document_relateditems.pt
index 2e5dc5fd..f5ed3957 100644
--- a/plone/app/layout/viewlets/document_relateditems.pt
+++ b/plone/app/layout/viewlets/document_relateditems.pt
@@ -22,7 +22,7 @@
                               item_has_image      python:item.getIcon"
                               tal:attributes="title item_type">
               <a tal:attributes="href  item_url">
-                 <img class="image-icon"
+                 <img class="thumb-icon"
                       tal:define="getIcon python:item.getURL() +'/@@images/image/icon'"
                       tal:condition="item_has_image"
                       tal:attributes="src  string:$getIcon">