diff --git a/config/datatypes_conf.xml.sample b/config/datatypes_conf.xml.sample
index d28b23cb12d..d27b931909e 100644
--- a/config/datatypes_conf.xml.sample
+++ b/config/datatypes_conf.xml.sample
@@ -736,7 +736,7 @@
     <datatype extension="dada2_mergepairs" type="galaxy.datatypes.binary:RData" subclass="true" display_in_upload="true" />
     <datatype extension="dada2_sequencetable" type="galaxy.datatypes.tabular:Tabular" mimetype="application/text" subclass="true" display_in_upload="true" />
     <datatype extension="dada2_uniques" type="galaxy.datatypes.tabular:Tabular" mimetype="application/text" subclass="true" display_in_upload="true" />
-    <datatype extension="ckpt" type="galaxy.datatypes.binary:Tensorflow" display_in_upload="true" />
+    <datatype extension="ckpt" type="galaxy.datatypes.binary:Tensorflow" subclass="true" display_in_upload="true" />
   </registration>
   <sniffers>
     <!--