diff --git a/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C b/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C
index 108109702b03dcb1170006f4a681afe4ea7012c3..bc4bf5ee889aebf2cfc3d4ca1d86eaee2447998c 100644
--- a/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C
+++ b/src/regionModels/surfaceFilmModels/submodels/kinematic/filmTurbulenceModel/laminar/laminar.C
@@ -76,7 +76,7 @@ tmp<volVectorField> laminar::Us() const
         (
             IOobject
             (
-                typeName + ".Us",
+                typeName + ":Us",
                 owner_.regionMesh().time().timeName(),
                 owner_.regionMesh(),
                 IOobject::NO_READ,
@@ -104,7 +104,7 @@ tmp<volScalarField> laminar::mut() const
         (
             IOobject
             (
-                typeName + ".mut",
+                typeName + ":mut",
                 owner_.regionMesh().time().timeName(),
                 owner_.regionMesh(),
                 IOobject::NO_READ,