diff --git a/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/CalorimeterDefinitions.h b/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/CalorimeterDefinitions.h
index 7646dd163809f..173655a7bfc0d 100644
--- a/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/CalorimeterDefinitions.h
+++ b/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/CalorimeterDefinitions.h
@@ -101,7 +101,7 @@ namespace ALPAKA_ACCELERATOR_NAMESPACE::particleFlowRecHitProducer {
         return detId2denseIdHE(detId);
 
       printf("invalid detId: %u\n", detId);
-      return -1;
+      return 0;
     }
   };