diff --git a/Source/WarpX.cpp b/Source/WarpX.cpp
index db2f0c0b146..7f9288debb7 100644
--- a/Source/WarpX.cpp
+++ b/Source/WarpX.cpp
@@ -1388,7 +1388,7 @@ WarpX::ReadParameters ()
         // Instead, if warpx.grid_type=collocated, the momentum-conserving and
         // energy conserving field gathering algorithms are equivalent (forces
         // gathered from the collocated grid) and no fields centering occurs.
-        if ((WarpX::field_gathering_algo == GatheringAlgo::MomentumConserving 
+        if ((WarpX::field_gathering_algo == GatheringAlgo::MomentumConserving
             && WarpX::grid_type != GridType::Collocated)
             || WarpX::electrostatic_solver_id == ElectrostaticSolverAlgo::LabFrameElectroMagnetostatic)
         {