diff --git a/lib/galaxy/tool_util/xsd/galaxy.xsd b/lib/galaxy/tool_util/xsd/galaxy.xsd
index 9ba5cfbd890..142e1c00cd2 100644
--- a/lib/galaxy/tool_util/xsd/galaxy.xsd
+++ b/lib/galaxy/tool_util/xsd/galaxy.xsd
@@ -3338,7 +3338,7 @@ $attribute_list:data_ref,dynamic_options,display,multiple:5
 
 This parameter type is used to select columns from a parameter.
 
-$attribute_list:force_select,numerical,use_header_name:5
+$attribute_list:force_select,numerical,use_header_name,multiple:5
 
 #### ``drill_down``
 
@@ -3348,7 +3348,7 @@ all leaf nodes in the subtree are used.
 
 See [drill_down.xml](https://github.com/galaxyproject/galaxy/blob/dev/test/functional/tools/drill_down.xml)
 
-$attribute_list:hierarchy:5
+$attribute_list:hierarchy,multiple:5
 
 #### ``data_collection``