diff --git a/applications/solvers/heatTransfer/buoyantSimpleFoam/pEqn.H b/applications/solvers/heatTransfer/buoyantSimpleFoam/pEqn.H
index 85157e8b2f..dafbf707e7 100644
--- a/applications/solvers/heatTransfer/buoyantSimpleFoam/pEqn.H
+++ b/applications/solvers/heatTransfer/buoyantSimpleFoam/pEqn.H
@@ -34,6 +34,7 @@
         )/(mesh.magSf().boundaryField()*rhorAUf.boundaryField())
     );
 
+
     while (simple.correctNonOrthogonal())
     {
         fvScalarMatrix p_rghEqn
@@ -64,9 +65,12 @@
 
     p = p_rgh + rho*gh;
 
+    dimensionedScalar compressibility = fvc::domainIntegrate(psi);
+    bool compressible = (compressibility.value() > SMALL);
+
     // For closed-volume cases adjust the pressure level
     // to obey overall mass continuity
-    if (closedVolume)
+    if (closedVolume && compressible)
     {
         p += (initialMass - fvc::domainIntegrate(psi*p))
             /fvc::domainIntegrate(psi);
diff --git a/tutorials/mesh/foamyHexMesh/simpleShapes/Allrun b/tutorials/mesh/foamyHexMesh/simpleShapes/Allrun
index 3b172cb321..a504552e46 100755
--- a/tutorials/mesh/foamyHexMesh/simpleShapes/Allrun
+++ b/tutorials/mesh/foamyHexMesh/simpleShapes/Allrun
@@ -4,26 +4,21 @@ cd ${0%/*} || exit 1    # Run from this directory
 # Source tutorial run functions
 . $WM_PROJECT_DIR/bin/tools/RunFunctions
 
-runApplication surfaceOrient \
+runApplication -log log.surfaceOrient.cone surfaceOrient \
     constant/triSurface/cone.stl \
     -inside '(0 -0.5 0)' \
     constant/triSurface/cone_orient.stl
-mv log.surfaceOrient log.surfaceOrient.cone
 
-runApplication surfaceOrient \
+runApplication -log log.surfaceOrient.sphere surfaceOrient \
     constant/triSurface/sphere.stl \
     -inside '(0 -0.5 0)' \
     constant/triSurface/sphere_orient.stl
-mv log.surfaceOrient log.surfaceOrient.sphere
 
-runApplication surfaceBooleanFeatures intersection \
-                       constant/triSurface/cone_orient.stl \
-                       constant/triSurface/sphere_orient.stl
+runApplication surfaceBooleanFeatures intersection cone_orient.stl sphere_orient.stl
 
 runApplication foamyHexMesh
 
-runApplication collapseEdges -latestTime -collapseFaceSet indirectPatchFaces
-mv log.collapseEdges log.collapseFaceSet
+runApplication -log log.collapseFaceSet collapseEdges -latestTime -collapseFaceSet indirectPatchFaces
 
 runApplication collapseEdges -latestTime -collapseFaces