diff --git a/src/turbulenceModels/compressible/RAS/SpalartAllmaras/SpalartAllmaras.H b/src/turbulenceModels/compressible/RAS/SpalartAllmaras/SpalartAllmaras.H
index 1293fa6d70..d9c1e59c7d 100644
--- a/src/turbulenceModels/compressible/RAS/SpalartAllmaras/SpalartAllmaras.H
+++ b/src/turbulenceModels/compressible/RAS/SpalartAllmaras/SpalartAllmaras.H
@@ -170,7 +170,7 @@ public:
                 new volScalarField
                 (
                     "DnuTildaEff",
-                    rho_*nuTilda_/sigmaNut_ + mu()
+                    (rho_*nuTilda_ + mu())/sigmaNut_
                 )
             );
         }
diff --git a/src/turbulenceModels/incompressible/RAS/SpalartAllmaras/SpalartAllmaras.C b/src/turbulenceModels/incompressible/RAS/SpalartAllmaras/SpalartAllmaras.C
index 381a4e17fe..e2bf3cc1fd 100644
--- a/src/turbulenceModels/incompressible/RAS/SpalartAllmaras/SpalartAllmaras.C
+++ b/src/turbulenceModels/incompressible/RAS/SpalartAllmaras/SpalartAllmaras.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2004-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 2004-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -233,7 +233,7 @@ tmp<volScalarField> SpalartAllmaras::DnuTildaEff() const
 {
     return tmp<volScalarField>
     (
-        new volScalarField("DnuTildaEff", nuTilda_/sigmaNut_ + nu())
+        new volScalarField("DnuTildaEff", (nuTilda_ + nu())/sigmaNut_)
     );
 }