diff --git a/applications/solvers/heatTransfer/buoyantPimpleFoam/pEqn.H b/applications/solvers/heatTransfer/buoyantPimpleFoam/pEqn.H
index 7fbe21906f..93057220e4 100644
--- a/applications/solvers/heatTransfer/buoyantPimpleFoam/pEqn.H
+++ b/applications/solvers/heatTransfer/buoyantPimpleFoam/pEqn.H
@@ -16,7 +16,7 @@ surfaceScalarField phiHbyA
     "phiHbyA",
     (
         fvc::interpolate(rho)*fvc::flux(HbyA)
-      + MRF.zeroFilter(rhorAUf*fvc::ddtCorr(rho, U, phi))
+      + MRF.zeroFilter(rhorAUf*fvc::ddtCorr(rho, U, phi, rhoUf))
     )
 );