diff --git a/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.C b/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.C
index 55c7140f37..f53442df8e 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.C
@@ -40,7 +40,7 @@ Foam::totalTemperatureFvPatchScalarField::totalTemperatureFvPatchScalarField
     fixedValueFvPatchScalarField(p, iF),
     UName_("U"),
     phiName_("phi"),
-    psiName_("psi"),
+    psiName_("thermo:psi"),
     gamma_(0.0),
     T0_(p.size(), 0.0)
 {}
@@ -73,7 +73,7 @@ Foam::totalTemperatureFvPatchScalarField::totalTemperatureFvPatchScalarField
     fixedValueFvPatchScalarField(p, iF),
     UName_(dict.lookupOrDefault<word>("U", "U")),
     phiName_(dict.lookupOrDefault<word>("phi", "phi")),
-    psiName_(dict.lookupOrDefault<word>("psi", "psi")),
+    psiName_(dict.lookupOrDefault<word>("psi", "thermo:psi")),
     gamma_(readScalar(dict.lookup("gamma"))),
     T0_("T0", dict, p.size())
 {
@@ -179,7 +179,7 @@ void Foam::totalTemperatureFvPatchScalarField::write(Ostream& os) const
     fvPatchScalarField::write(os);
     writeEntryIfDifferent<word>(os, "U", "U", UName_);
     writeEntryIfDifferent<word>(os, "phi", "phi", phiName_);
-    writeEntryIfDifferent<word>(os, "psi", "psi", psiName_);
+    writeEntryIfDifferent<word>(os, "psi", "thermo:psi", psiName_);
     os.writeKeyword("gamma") << gamma_ << token::END_STATEMENT << nl;
     T0_.writeEntry("T0", os);
     writeEntry("value", os);
diff --git a/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.H b/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.H
index d793696ade..6a032dfee9 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.H
+++ b/src/finiteVolume/fields/fvPatchFields/derived/totalTemperature/totalTemperatureFvPatchScalarField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -36,7 +36,7 @@ Description
         Property     | Description             | Required    | Default value
         U            | Velocity field name     | no          | U
         phi          | Flux field name         | no          | phi
-        psi          | Compressibility field name | no       | psi
+        psi          | Compressibility field name | no       | thermo:psi
         gamma        | ratio of specific heats (Cp/Cv) | yes |
         T0           | reference temperature   | yes         |
     \endtable