2 files changed, 13 insertions, 3 deletions
diff --git a/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridFFTData.H b/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridFFTData.H
index 44bb42982..7e037cf8d 100644
--- a/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridFFTData.H
+++ b/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridFFTData.H
@@ -7,6 +7,10 @@
 #ifndef WARPX_PICSAR_HYBRID_FFTDATA_H_
 #define WARPX_PICSAR_HYBRID_FFTDATA_H_
 
+#ifdef WARPX_USE_PSATD
+#   include <fftw3.h>
+
+
 // FFTData is a stuct containing a 22 pointers to auxiliary arrays
 // 1-11: padded arrays in real space (required by FFTW); 12-22: arrays in spectral space
 struct FFTData
@@ -35,4 +39,5 @@ struct FFTData
     void operator= (FFTData&&) = delete;
 };
 
-#endif // WARPX_PICSAR_HYBRID_FFTDATA_H_
-\ No newline at end of file
+#endif // WARPX_USE_PSATD
+#endif // WARPX_PICSAR_HYBRID_FFTDATA_H_
diff --git a/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridSpectralSolver.cpp b/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridSpectralSolver.cpp
index 978129cf2..80220da5a 100644
--- a/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridSpectralSolver.cpp
+++ b/Source/FieldSolver/PicsarHybridSpectralSolver/PicsarHybridSpectralSolver.cpp
@@ -5,10 +5,13 @@
  *
  * License: BSD-3-Clause-LBNL
  */
-
-#include <WarpX.H>
+#include "PicsarHybridFFTData.H"
+#include "WarpX.H"
 #include <AMReX_iMultiFab.H>
 
+
+#ifdef WARPX_USE_PSATD
+
 using namespace amrex;
 
 constexpr int FFTData::N;
@@ -451,3 +454,5 @@ WarpX::PushPSATD_hybridFFT (int lev, amrex::Real /* dt */)
         amrex::Abort("WarpX::PushPSATD: TODO");
     }
 }
+
+#endif // WARPX_USE_PSATD