diff --git a/RecoLocalCalo/EcalRecProducers/plugins/alpaka/EcalUncalibRecHitPhase2WeightsAlgoPortable.dev.cc b/RecoLocalCalo/EcalRecProducers/plugins/alpaka/EcalUncalibRecHitPhase2WeightsAlgoPortable.dev.cc
index eed4491c4942d..5baa305acd2ee 100644
--- a/RecoLocalCalo/EcalRecProducers/plugins/alpaka/EcalUncalibRecHitPhase2WeightsAlgoPortable.dev.cc
+++ b/RecoLocalCalo/EcalRecProducers/plugins/alpaka/EcalUncalibRecHitPhase2WeightsAlgoPortable.dev.cc
@@ -39,6 +39,7 @@ namespace ALPAKA_ACCELERATOR_NAMESPACE::ecal::weights {
 #pragma GCC diagnostic ignored "-Wdangling-reference"
         const auto& digi = digisDev[tx].data();
 #pragma GCC diagnostic pop
+        // rebuild 8
         auto recHit = uncalibratedRecHitsDev[tx];
         recHit.amplitude() = 0;
         recHit.jitter() = 0;