diff --git a/applications/solvers/compressible/rhoPimpleFoam/rhoPimpleDyMFoam/pEqn.H b/applications/solvers/compressible/rhoPimpleFoam/rhoPimpleDyMFoam/pEqn.H
index e9fab27bc7..5270e3d85b 100644
--- a/applications/solvers/compressible/rhoPimpleFoam/rhoPimpleDyMFoam/pEqn.H
+++ b/applications/solvers/compressible/rhoPimpleFoam/rhoPimpleDyMFoam/pEqn.H
@@ -112,5 +112,10 @@ K = 0.5*magSqr(U);
 
 if (thermo.dpdt())
 {
-    dpdt = fvc::ddt(p) - fvc::div(fvc::meshPhi(rho, U), p);
+    dpdt = fvc::ddt(p);
+
+    if (mesh.moving())
+    {
+        dpdt -= fvc::div(fvc::meshPhi(rho, U), p);
+    }
 }