fix PSATD compilation.

1 files changed, 5 insertions, 2 deletions

diff --git a/Source/WarpXEvolve.cpp b/Source/WarpXEvolve.cpp
index b3673ab6c..b4a249e71 100644
--- a/Source/WarpXEvolve.cpp
+++ b/Source/WarpXEvolve.cpp
@@ -858,8 +858,11 @@ WarpX::EvolvePSATD (int numsteps)
 	}
 
         if (do_boosted_frame_diagnostic) {
-            std::unique_ptr<MultiFab> cell_centered_data = GetCellCenteredData();
-            myBFD->writeLabFrameData(*cell_centered_data, geom[0], cur_time);
+            std::unique_ptr<MultiFab> cell_centered_data = nullptr;
+            if (WarpX::do_boosted_frame_fields) {
+                cell_centered_data = GetCellCenteredData();
+            }
+            myBFD->writeLabFrameData(cell_centered_data.get(), *mypc, geom[0], cur_time, dt[0]);
         }
 
         bool to_make_plot = (plot_int > 0) && ((step+1) % plot_int == 0);