diff --git a/openstack_dashboard/dashboards/project/images/images/tables.py b/openstack_dashboard/dashboards/project/images/images/tables.py
index 77e70fc6f4..81424b03ed 100644
--- a/openstack_dashboard/dashboards/project/images/images/tables.py
+++ b/openstack_dashboard/dashboards/project/images/images/tables.py
@@ -244,6 +244,7 @@ class ImagesTable(tables.DataTable):
     disk_format = tables.Column(get_format, verbose_name=_("Format"))
     size = tables.Column("size",
                          filters=(filters.filesizeformat,),
+                         attrs=({"data-type": "size"}),
                          verbose_name=_("Size"))
 
     class Meta: