diff --git a/Framework/Particles/ParticleClassNames.xml b/Framework/Particles/ParticleClassNames.xml
index 64b459798727a926bc50d0436a362b955178b56d..8af3e990e20de3d17f64be65c3e5816220a78a6c 100644
--- a/Framework/Particles/ParticleClassNames.xml
+++ b/Framework/Particles/ParticleClassNames.xml
@@ -3,11 +3,11 @@
   <!-- For selected particles it is possible to specify the C++ class
        names for a specific unique PDG code -->
   
-  <particle id="0" classname="unknown"> </particle> <!-- VOID in Pythia8 -->
+  <particle pdgID="0" classname="unknown" /> <!-- VOID in Pythia8 -->
   
-  <particle id="11" classname="Electron"> </particle>
-  <particle id="-11" classname="Positron"> </particle>
-  <particle id="22" classname="Gamma"> </particle>
+  <particle pdgID="11" classname="Electron" />
+  <particle pdgID="-11" classname="Positron" />
+  <particle pdgID="22" classname="Gamma" />
 
 </chapter>