diff --git a/applications/utilities/mesh/conversion/writeMeshObj/writeMeshObj.C b/applications/utilities/mesh/conversion/writeMeshObj/writeMeshObj.C
index 9a594ec2da78b60106e4ac9d5cffd5a17e34958a..a5c85cd07df121728295e02f2b41b5bae04110f6 100644
--- a/applications/utilities/mesh/conversion/writeMeshObj/writeMeshObj.C
+++ b/applications/utilities/mesh/conversion/writeMeshObj/writeMeshObj.C
@@ -67,8 +67,6 @@ void writeOBJ(const point& pt, Ostream& os)
 // All edges of mesh
 void writePoints(const polyMesh& mesh, const fileName& timeName)
 {
-    label vertI = 0;
-
     fileName pointFile(mesh.time().path()/"meshPoints_" + timeName + ".obj");
 
     Info<< "Writing mesh points and edges to " << pointFile << endl;
@@ -78,7 +76,6 @@ void writePoints(const polyMesh& mesh, const fileName& timeName)
     forAll(mesh.points(), pointi)
     {
         writeOBJ(mesh.points()[pointi], pointStream);
-        vertI++;
     }
 
     forAll(mesh.edges(), edgeI)
diff --git a/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C b/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C
index 42e2bd77ee3454ae634eb52bc1a13a11bef3f6f8..d362fabd2844cec1e975c46c466a6bd6de9f028f 100644
--- a/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C
+++ b/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C
@@ -4635,7 +4635,7 @@ Foam::snappyLayerDriver::snappyLayerDriver
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-void Foam::snappyLayerDriver::mergePatchFacesUndo
+Foam::label Foam::snappyLayerDriver::mergePatchFacesUndo
 (
     const layerParameters& layerParams,
     const dictionary& motionDict,
@@ -4685,6 +4685,8 @@ void Foam::snappyLayerDriver::mergePatchFacesUndo
     );
 
     nChanged += meshRefiner_.mergeEdgesUndo(minCos, motionDict);
+
+    return nChanged;
 }
 
 
diff --git a/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.H b/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.H
index 384f61ff88085c23236326114350af41c17a9e0b..933add9ea8e0ad7a5d9253948ffba098d7ce541a 100644
--- a/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.H
+++ b/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.H
@@ -627,8 +627,9 @@ public:
 
     // Member Functions
 
-            //- Merge patch faces on same cell.
-            void mergePatchFacesUndo
+            //- Merge patch faces on same cell. Return total number of
+            //- faces/edges changed.
+            label mergePatchFacesUndo
             (
                 const layerParameters& layerParams,
                 const dictionary& motionDict,