diff --git a/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C b/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C
index 4596a47125..b3f2917851 100644
--- a/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C
+++ b/src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C
@@ -178,7 +178,7 @@ Foam::scalar Foam::ThermoParcel<ParcelType>::calcHeatTransfer
 
     if (mag(htc) < ROOTVSMALL && !td.cloud().radiation())
     {
-        return  T + dt*Sh/(this->mass()*cp);
+        return  T + dt*Sh/(this->volume(d)*rho*cp);
     }
 
     scalar ap;