diff --git a/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.C b/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.C
index 65704e0b1a8fd302d41924a4c7b2c5d57088e456..8e1bb149e7636809c2abbb503df13b8eb0d50a6a 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.C
@@ -94,7 +94,7 @@ movingWallVelocityFvPatchVectorField
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
 Foam::tmp<Foam::vectorField>
-Foam::movingWallVelocityFvPatchVectorField::Uwall()
+Foam::movingWallVelocityFvPatchVectorField::Uwall() const
 {
     const fvMesh& mesh = internalField().mesh();
     const fvPatch& p = patch();
diff --git a/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.H b/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.H
index f6a9ff2689650e721371c214528a971a3c0f36f2..9b5b05cd7ec3d74e68863b3d8bec9ac96cb5facd 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.H
+++ b/src/finiteVolume/fields/fvPatchFields/derived/movingWallVelocity/movingWallVelocityFvPatchVectorField.H
@@ -142,7 +142,7 @@ public:
     // Member Functions
 
         //- Return wall velocity field
-        tmp<vectorField> Uwall();
+        tmp<vectorField> Uwall() const;
 
         //- Update the coefficients associated with the patch field
         virtual void updateCoeffs();