1 files changed, 2 insertions, 1 deletions
diff --git a/Source/Parallelization/WarpXSumGuardCells.H b/Source/Parallelization/WarpXSumGuardCells.H
index 78738c130..c94e8a0fb 100644
--- a/Source/Parallelization/WarpXSumGuardCells.H
+++ b/Source/Parallelization/WarpXSumGuardCells.H
@@ -36,7 +36,7 @@ WarpXSumGuardCells(amrex::MultiFab& mf, const amrex::Periodicity& period,
         n_updated_guards = mf.nGrowVect();
     else  // Update only the valid cells
         n_updated_guards = amrex::IntVect::TheZeroVector();
-    mf.SumBoundary(icomp, ncomp, src_ngrow, n_updated_guards, period);
+    WarpXCommUtil::SumBoundary(mf, icomp, ncomp, src_ngrow, n_updated_guards, period);
 }
 
 /** \brief Sum the values of `src` where the different boxes overlap
@@ -69,6 +69,7 @@ WarpXSumGuardCells(amrex::MultiFab& dst, amrex::MultiFab& src,
         n_updated_guards = amrex::IntVect::TheZeroVector();
 
     dst.setVal(0., icomp, ncomp, n_updated_guards);
+//    WarpXCommUtil::ParallelAdd(dst, src, 0, icomp, ncomp, src_ngrow, n_updated_guards, period);
     dst.ParallelAdd(src, 0, icomp, ncomp, src_ngrow, n_updated_guards, period);
 }