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-rw-r--r--Source/FieldSolver/FiniteDifferenceSolver/EvolveE.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/Source/FieldSolver/FiniteDifferenceSolver/EvolveE.cpp b/Source/FieldSolver/FiniteDifferenceSolver/EvolveE.cpp
index 3cb433e97..63fc8b38d 100644
--- a/Source/FieldSolver/FiniteDifferenceSolver/EvolveE.cpp
+++ b/Source/FieldSolver/FiniteDifferenceSolver/EvolveE.cpp
@@ -71,6 +71,10 @@ void FiniteDifferenceSolver::EvolveECartesian (
std::unique_ptr<amrex::MultiFab> const& Ffield,
int lev, amrex::Real const dt ) {
+#ifndef AMREX_USE_EB
+ amrex::ignore_unused(edge_lengths);
+#endif
+
amrex::LayoutData<amrex::Real>* cost = WarpX::getCosts(lev);
Real constexpr c2 = PhysConst::c * PhysConst::c;