diff --git a/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C b/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C
index bc4bf5ee88..99fd8302ec 100644
--- a/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C
+++ b/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C
@@ -122,6 +122,7 @@ void laminar::correct()
     // do nothing
 }
 
+
 tmp<fvVectorMatrix> laminar::Su(volVectorField& U) const
 {
     // local reference to film model
@@ -138,9 +139,7 @@ tmp<fvVectorMatrix> laminar::Su(volVectorField& U) const
 
     // employ simple coeff-based model
     volScalarField Cs("Cs", Cf_*rhop*mag(Up - Us));
-
-    dimensionedScalar d0("SMALL", delta.dimensions(), SMALL);
-    volScalarField Cw("Cw", mu/(0.3333*(delta + d0)));
+    volScalarField Cw("Cw", mu/(0.3333*(delta + film.deltaSmall())));
     Cw.min(5000.0);
 
     return