diff --git a/Common/Core/RecoDecay.h b/Common/Core/RecoDecay.h
index a8e4de1216f..f4b8c7a86a8 100644
--- a/Common/Core/RecoDecay.h
+++ b/Common/Core/RecoDecay.h
@@ -1074,14 +1074,14 @@ struct RecoDecay {
             if (PDGParticleIMother < 9 || (PDGParticleIMother > 20 && PDGParticleIMother < 38)) {
               auto PDGPaticle = std::abs(particleMother.pdgCode());
               if (
-                (PDGParticleIMother / 100 == 5 || // b mesons
-                 PDGParticleIMother / 1000 == 5)  // b baryons
+                (PDGParticle / 100 == 5 || // b mesons
+                 PDGParticle / 1000 == 5)  // b baryons
               ) {
                 return OriginType::NonPrompt; // beauty
               }
               if (
-                (PDGParticleIMother / 100 == 4 || // c mesons
-                 PDGParticleIMother / 1000 == 4)  // c baryons
+                (PDGParticle / 100 == 4 || // c mesons
+                 PDGParticle / 1000 == 4)  // c baryons
               ) {
                 return OriginType::Prompt; // charm
               }