diff --git a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.C b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.C
index 6b26992fbc..b29ccc1191 100644
--- a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.C
+++ b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.C
@@ -6,6 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2014 OpenFOAM Foundation
+    Copyright (C) 2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -27,43 +28,35 @@ License
 
 #include "zeroFixedValuePointPatchField.H"
 
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-namespace Foam
-{
-
 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * * //
 
 template<class Type>
-zeroFixedValuePointPatchField<Type>::
-zeroFixedValuePointPatchField
+Foam::zeroFixedValuePointPatchField<Type>::zeroFixedValuePointPatchField
 (
     const pointPatch& p,
     const DimensionedField<Type, pointMesh>& iF
 )
 :
-    fixedValuePointPatchField<Type>(p, iF)
+    // Field is zero
+    fixedValuePointPatchField<Type>(p, iF, Type(Zero))
 {}
 
 
 template<class Type>
-zeroFixedValuePointPatchField<Type>::
-zeroFixedValuePointPatchField
+Foam::zeroFixedValuePointPatchField<Type>::zeroFixedValuePointPatchField
 (
     const pointPatch& p,
     const DimensionedField<Type, pointMesh>& iF,
     const dictionary& dict
 )
 :
-    fixedValuePointPatchField<Type>(p, iF, dict, false)
-{
-    fixedValuePointPatchField<Type>::operator=(Type(Zero));
-}
+    // Field is zero
+    fixedValuePointPatchField<Type>(p, iF, Type(Zero))
+{}
 
 
 template<class Type>
-zeroFixedValuePointPatchField<Type>::
-zeroFixedValuePointPatchField
+Foam::zeroFixedValuePointPatchField<Type>::zeroFixedValuePointPatchField
 (
     const zeroFixedValuePointPatchField<Type>& ptf,
     const pointPatch& p,
@@ -71,27 +64,26 @@ zeroFixedValuePointPatchField
     const pointPatchFieldMapper& mapper
 )
 :
-    fixedValuePointPatchField<Type>(ptf, p, iF, mapper)
-{
-    // For safety re-evaluate
-    fixedValuePointPatchField<Type>::operator=(Type(Zero));
-}
+    // Field is zero : no mapping needed
+    fixedValuePointPatchField<Type>(p, iF, Type(Zero))
+{}
 
 
 template<class Type>
-zeroFixedValuePointPatchField<Type>::
-zeroFixedValuePointPatchField
+Foam::zeroFixedValuePointPatchField<Type>::zeroFixedValuePointPatchField
 (
     const zeroFixedValuePointPatchField<Type>& ptf
 )
 :
     fixedValuePointPatchField<Type>(ptf)
-{}
+{
+    // Field is zero. For safety, re-assign
+    valuePointPatchField<Type>::operator=(Type(Zero));
+}
 
 
 template<class Type>
-zeroFixedValuePointPatchField<Type>::
-zeroFixedValuePointPatchField
+Foam::zeroFixedValuePointPatchField<Type>::zeroFixedValuePointPatchField
 (
     const zeroFixedValuePointPatchField<Type>& ptf,
     const DimensionedField<Type, pointMesh>& iF
@@ -99,13 +91,9 @@ zeroFixedValuePointPatchField
 :
     fixedValuePointPatchField<Type>(ptf, iF)
 {
-    // For safety re-evaluate
-    fixedValuePointPatchField<Type>::operator=(Type(Zero));
+    // Field is zero. For safety, re-assign
+    valuePointPatchField<Type>::operator=(Type(Zero));
 }
 
 
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-} // End namespace Foam
-
 // ************************************************************************* //
diff --git a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.H b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.H
index 8b52d2d10e..41862edb7b 100644
--- a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.H
+++ b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/zeroFixedValue/zeroFixedValuePointPatchField.H
@@ -42,8 +42,8 @@ SourceFiles
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef zeroFixedValuePointPatchField_H
-#define zeroFixedValuePointPatchField_H
+#ifndef Foam_zeroFixedValuePointPatchField_H
+#define Foam_zeroFixedValuePointPatchField_H
 
 #include "fixedValuePointPatchField.H"
 
@@ -53,7 +53,7 @@ namespace Foam
 {
 
 /*---------------------------------------------------------------------------*\
-          Class zeroFixedValuePointPatchField Declaration
+                Class zeroFixedValuePointPatchField Declaration
 \*---------------------------------------------------------------------------*/
 
 template<class Type>
@@ -61,7 +61,6 @@ class zeroFixedValuePointPatchField
 :
     public fixedValuePointPatchField<Type>
 {
-
 public:
 
     //- Runtime type information
@@ -135,7 +134,6 @@ public:
                 )
             );
         }
-
 };