diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/makeCellSets.setSet b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/makeCellSets.setSet
index 7e0c2bd522..8f85c9ef23 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/makeCellSets.setSet
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/makeCellSets.setSet
@@ -1,11 +1,11 @@
-cellSet heater new boxToCell (-0.01    0 -100 )(0.01 0.01 100)
-cellSet heater add boxToCell (-0.01 -100 -0.01)(0.01 0.01 0.01)
+cellSet heater new boxToCell (-0.01001    0 -100 )(0.01001 0.00999 100)
+cellSet heater add boxToCell (-0.01001 -100 -0.01001)(0.01001 0.00999 0.01001)
 cellZoneSet heater new setToCellZone heater
-cellSet leftSolid new boxToCell (-100 0 -100 )(-0.01 0.01 100)
+cellSet leftSolid new boxToCell (-100 0 -100 )(-0.01001 0.00999 100)
 cellZoneSet leftSolid new setToCellZone leftSolid
-cellSet rightSolid new boxToCell (0.01 0 -100 )(100 0.01 100)
+cellSet rightSolid new boxToCell (0.01001 0 -100 )(100 0.00999 100)
 cellZoneSet rightSolid new setToCellZone rightSolid
-cellSet topAir new boxToCell (-100 0.01 -100 )(100 100 100)
+cellSet topAir new boxToCell (-100 0.00999 -100 )(100 100 100)
 cellZoneSet topAir new setToCellZone topAir
 cellSet bottomAir clear
 cellSet bottomAir add cellToCell heater
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomAir/fvSolution b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomAir/fvSolution
index 1e968f0aea..036a4b0cb0 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomAir/fvSolution
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomAir/fvSolution
@@ -18,9 +18,16 @@ solvers
 {
     rho
     {
-        solver          PCG
+        solver          PCG;
         preconditioner  DIC;
         tolerance       1e-8;
+        relTol          0.1;
+    }
+
+    rhoFinal
+    {
+        $rho;
+        tolerance       1e-8;
         relTol          0;
     }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/fvSolution b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/fvSolution
index d2d44df4fc..3217c345e8 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/fvSolution
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/topAir/fvSolution
@@ -18,9 +18,16 @@ solvers
 {
     rho
     {
-        solver          PCG
+        solver          PCG;
         preconditioner  DIC;
         tolerance       1e-7;
+        relTol          0.1;
+    }
+
+    rhoFinal
+    {
+        $rho;
+        tolerance       1e-7;
         relTol          0;
     }