diff --git a/xml/nodes-3.10.rng b/xml/nodes-3.10.rng
index 6af4868e38..ac2c5579c2 100644
--- a/xml/nodes-3.10.rng
+++ b/xml/nodes-3.10.rng
@@ -1,44 +1,46 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <grammar xmlns="http://relaxng.org/ns/structure/1.0"
          datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
   <start>
       <ref name="element-nodes"/>
   </start>
 
   <define name="element-nodes">
     <element name="nodes">
       <zeroOrMore>
         <element name="node">
           <attribute name="id"><text/></attribute>
           <attribute name="uname"><text/></attribute>
           <optional>
             <attribute name="type">
               <choice>
                 <value>member</value>
-                <value>ping</value>
                 <value>remote</value>
+
+                <!-- @COMPAT ping nodes are deprecated since 2.1.3 -->
+                <value>ping</value>
               </choice>
             </attribute>
           </optional>
           <optional>
             <attribute name="description"><text/></attribute>
           </optional>
           <optional>
             <externalRef href="score.rng"/>
           </optional>
           <zeroOrMore>
             <choice>
               <element name="instance_attributes">
                 <externalRef href="nvset-3.10.rng"/>
               </element>
               <element name="utilization">
                 <externalRef href="nvset-3.10.rng"/>
               </element>
             </choice>
           </zeroOrMore>
         </element>
       </zeroOrMore>
     </element>
   </define>
 
 </grammar>