diff --git a/src/lagrangian/parcel/submodels/Thermodynamic/SurfaceFilmModel/ThermoSurfaceFilm/ThermoSurfaceFilm.C b/src/lagrangian/parcel/submodels/Thermodynamic/SurfaceFilmModel/ThermoSurfaceFilm/ThermoSurfaceFilm.C
index c87a545e41..5e34c6513c 100644
--- a/src/lagrangian/parcel/submodels/Thermodynamic/SurfaceFilmModel/ThermoSurfaceFilm/ThermoSurfaceFilm.C
+++ b/src/lagrangian/parcel/submodels/Thermodynamic/SurfaceFilmModel/ThermoSurfaceFilm/ThermoSurfaceFilm.C
@@ -628,7 +628,8 @@ void Foam::ThermoSurfaceFilm<CloudType>::cacheFilmFields
     TFilmPatch_ = thermalFilmModel.T().boundaryField()[filmPatchi];
     filmModel.toPrimary(filmPatchi, TFilmPatch_);
 
-    CpFilmPatch_ = thermalFilmModel.Cpv().boundaryField()[filmPatchi];
+    // CpFilmPatch_ = thermalFilmModel.Cpv().boundaryField()[filmPatchi];
+    CpFilmPatch_ = thermalFilmModel.Cp().boundaryField()[filmPatchi];
     filmModel.toPrimary(filmPatchi, CpFilmPatch_);
 }