diff --git a/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/cellSizeFunction/cellSizeFunction.C b/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/cellSizeFunction/cellSizeFunction.C
index aa1e263a76..c7e92f3897 100644
--- a/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/cellSizeFunction/cellSizeFunction.C
+++ b/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/cellSizeFunction/cellSizeFunction.C
@@ -57,23 +57,35 @@ cellSizeFunction::cellSizeFunction
 {
     word mode = cellSizeFunctionDict.lookup("mode");
 
-    if (mode == "inside")
+    if (surface_.hasVolumeType())
     {
-        sideMode_ = INSIDE;
-    }
-    else if (mode == "outside")
-    {
-        sideMode_ = OUTSIDE;
-    }
-    else if (mode == "bothSides")
-    {
-        sideMode_ = BOTHSIDES;
-    }
-    else
-    {
-        FatalErrorIn("cellSizeFunction::cellSizeFunction")
+        if (mode == "inside")
+        {
+            sideMode_ = INSIDE;
+        }
+        else if (mode == "outside")
+        {
+            sideMode_ = OUTSIDE;
+        }
+        else if (mode == "bothSides")
+        {
+            sideMode_ = BOTHSIDES;
+        }
+        else
+        {
+            FatalErrorIn("cellSizeFunction::cellSizeFunction")
             << "Unknown mode, expected: inside, outside or bothSides" << nl
-            << exit(FatalError);
+                << exit(FatalError);
+        }
+    }
+    else if (mode != BOTHSIDES)
+    {
+        WarningIn("cellSizeFunction::cellSizeFunction")
+            << "surface does not support volumeType, defaulting mode to "
+            << "bothSides."
+            << endl;
+
+        sideMode_ = BOTHSIDES;
     }
 }
 
diff --git a/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/uniform/uniform.C b/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/uniform/uniform.C
index 8a7797713f..e86d3715b2 100644
--- a/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/uniform/uniform.C
+++ b/src/conformalVoronoiMesh/cellSizeControlSurfaces/cellSizeFunction/uniform/uniform.C
@@ -55,9 +55,44 @@ uniform::uniform
 
 bool uniform::cellSize(const point& pt, scalar& size) const
 {
-    size = cellSize_;
+    if (sideMode_ == BOTHSIDES)
+    {
+        size = cellSize_;
 
-    return true;
+        return true;
+    }
+
+    pointField ptF(1, pt);
+    List<searchableSurface::volumeType> vTL(1);
+
+    surface_.getVolumeType(ptF, vTL);
+
+    size = 0;
+
+    bool functionApplied = false;
+
+    if
+    (
+        sideMode_ == INSIDE
+     && vTL[1] == searchableSurface::INSIDE
+    )
+    {
+        size = cellSize_;
+
+        functionApplied = true;
+    }
+    else if
+    (
+        sideMode_ == OUTSIDE
+     && vTL[1] == searchableSurface::OUTSIDE
+    )
+    {
+        size = cellSize_;
+
+        functionApplied = true;
+    }
+
+    return functionApplied;
 }
 
 
diff --git a/src/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMesh.C b/src/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMesh.C
index bd4f9bd283..8c2d83fbb2 100644
--- a/src/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMesh.C
+++ b/src/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMesh.C
@@ -100,6 +100,9 @@ Foam::conformalVoronoiMesh::conformalVoronoiMesh
 {
     timeCheck();
 
+    point sizeTestPt = vector(0.5, 0.3, 0.6);
+    Info<< nl << cellSizeControl().cellSize(sizeTestPt) << endl;
+
     createFeaturePoints();
     timeCheck();