diff --git a/src/cloud/occi/lib/ImageOCCI.rb b/src/cloud/occi/lib/ImageOCCI.rb
index 77a6150349..11c60ae79a 100755
--- a/src/cloud/occi/lib/ImageOCCI.rb
+++ b/src/cloud/occi/lib/ImageOCCI.rb
@@ -30,7 +30,7 @@ class ImageOCCI < Image
             <DESCRIPTION><%= self['TEMPLATE/DESCRIPTION'] %></DESCRIPTION>
             <% end %>
             <% if size != nil %>
-            <SIZE><%= size %></SIZE>
+            <SIZE><%= size.to_i / 1024 %></SIZE>
             <% end %>
             <% if fstype != nil %>
             <FSTYPE><%= fstype %></FSTYPE>