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-rw-r--r--Source/FieldSolver/FiniteDifferenceSolver/EvolveB.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/FieldSolver/FiniteDifferenceSolver/EvolveB.cpp b/Source/FieldSolver/FiniteDifferenceSolver/EvolveB.cpp
index 1a50dc236..257bca404 100644
--- a/Source/FieldSolver/FiniteDifferenceSolver/EvolveB.cpp
+++ b/Source/FieldSolver/FiniteDifferenceSolver/EvolveB.cpp
@@ -177,7 +177,7 @@ void FiniteDifferenceSolver::EvolveBCartesian (
if (Gfield)
{
// Extract field data for this grid/tile
- Array4<Real> G = Gfield->array(mfi);
+ const Array4<Real> G = Gfield->array(mfi);
// Loop over cells and update G
amrex::ParallelFor(tbx, tby, tbz,