--- a/spec/scansion/pubsub_config.scs	Tue Oct 19 18:11:50 2021 +0200
+++ b/spec/scansion/pubsub_config.scs	Wed Oct 20 17:31:24 2021 +0200
@@ -48,7 +48,9 @@
 					<field var="pubsub#description" label="Description" type="text-single"/>
 					<field var="pubsub#type" label="The type of node data, usually specified by the namespace of the payload (if any)" type="text-single"/>
 					<field var="pubsub#max_items" label="Max # of items to persist" type="text-single">
-						<validate xmlns="http://jabber.org/protocol/xdata-validate" datatype="pubsub:integer-or-max"/>
+						<validate xmlns="http://jabber.org/protocol/xdata-validate" datatype="pubsub:integer-or-max">
+							<range min="1"/>
+						</validate>
 						<value>1</value>
 					</field>
 					<field var="pubsub#persist_items" label="Persist items to storage" type="boolean">
@@ -136,7 +138,9 @@
 					<field var="pubsub#description" type="text-single" label="Description"/>
 					<field var="pubsub#type" type="text-single" label="The type of node data, usually specified by the namespace of the payload (if any)"/>
 					<field var="pubsub#max_items" type="text-single" label="Max # of items to persist">
-						<validate xmlns="http://jabber.org/protocol/xdata-validate" datatype="pubsub:integer-or-max"/>
+						<validate xmlns="http://jabber.org/protocol/xdata-validate" datatype="pubsub:integer-or-max">
+							<range min="1"/>
+						</validate>
 						<value>1</value>
 					</field>
 					<field var="pubsub#persist_items" type="boolean" label="Persist items to storage">