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-rw-r--r--Source/Parallelization/WarpXComm.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/Parallelization/WarpXComm.cpp b/Source/Parallelization/WarpXComm.cpp
index 1c8c37cad..e24dd772c 100644
--- a/Source/Parallelization/WarpXComm.cpp
+++ b/Source/Parallelization/WarpXComm.cpp
@@ -688,7 +688,7 @@ WarpX::AddRhoFromFineLevelandSumBoundary(int lev, int icomp, int ncomp)
}
else if (charge_buf[lev+1]) // but no filter
{
- MultiFab::Copy(*charge_buf[lev+1],
+ MultiFab::Add(*charge_buf[lev+1],
*rho_cp[lev+1], icomp, icomp, ncomp,
rho_cp[lev+1]->nGrow());
mf.ParallelAdd(*charge_buf[lev+1], icomp, 0,