diff --git a/src/OpenFOAM/meshes/polyMesh/polyMeshTetDecomposition/polyMeshTetDecomposition.C b/src/OpenFOAM/meshes/polyMesh/polyMeshTetDecomposition/polyMeshTetDecomposition.C
index 23e7a3c52e2ef55168f48aeecfcec773fa6c4c40..8f29b9e9343d81bcb1a6815d63196fa22b461e7e 100644
--- a/src/OpenFOAM/meshes/polyMesh/polyMeshTetDecomposition/polyMeshTetDecomposition.C
+++ b/src/OpenFOAM/meshes/polyMesh/polyMeshTetDecomposition/polyMeshTetDecomposition.C
@@ -27,7 +27,7 @@ License
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
-const Foam::scalar Foam::polyMeshTetDecomposition::minTetQuality = 1e-9;
+const Foam::scalar Foam::polyMeshTetDecomposition::minTetQuality = 1e-12;
 
 
 // * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //