diff --git a/src/lagrangian/spray/parcels/Templates/SprayParcel/SprayParcel.C b/src/lagrangian/spray/parcels/Templates/SprayParcel/SprayParcel.C
index 8e291b75b7185d431304237a3040e6feed51320c..3381bbc087f2f82e036bc72b503a2b59e696eb78 100644
--- a/src/lagrangian/spray/parcels/Templates/SprayParcel/SprayParcel.C
+++ b/src/lagrangian/spray/parcels/Templates/SprayParcel/SprayParcel.C
@@ -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
@@ -246,7 +246,7 @@ void Foam::SprayParcel<ParcelType>::calcBreakup
     const scalar mass = p.mass();
     const forceSuSp Fcp = forces.calcCoupled(p, dt, mass, Re, muAv);
     const forceSuSp Fncp = forces.calcNonCoupled(p, dt, mass, Re, muAv);
-    scalar tMom = 1.0/(Fcp.Sp() + Fncp.Sp());
+    scalar tMom = mass/(Fcp.Sp() + Fncp.Sp());
 
     const vector g = td.cloud().g().value();
 
@@ -301,7 +301,7 @@ void Foam::SprayParcel<ParcelType>::calcBreakup
         child->tc() = -GREAT;
         child->ms() = 0.0;
         child->injector() = this->injector();
-        child->tMom() = 1.0/(Fcp.Sp() + Fncp.Sp());
+        child->tMom() = massChild/(Fcp.Sp() + Fncp.Sp());
         child->user() = 0.0;
         child->setCellValues(td, dt, cellI);