diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/bottomAir/thermophysicalProperties b/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/bottomAir/thermophysicalProperties
index be6c8895fda5db2e35371a7e90f78e060d7e5266..1c4488eb5e030a7cb28293290fff08fd2e85ec38 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/bottomAir/thermophysicalProperties
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/bottomAir/thermophysicalProperties
@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-thermoType      hPsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
+thermoType      hRhoThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
 
 mixture
 {
diff --git a/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/topAir/thermophysicalProperties b/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/topAir/thermophysicalProperties
index 972acfc40c53c7c807e63079092c3db82c4206ba..7f67791ae58ab8bd27e9dcb06a5dd7e7528cc8c0 100644
--- a/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/topAir/thermophysicalProperties
+++ b/tutorials/heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater/constant/topAir/thermophysicalProperties
@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-thermoType      hPsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
+thermoType      hRhoThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
 
 mixture
 {
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/bottomAir/thermophysicalProperties b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/bottomAir/thermophysicalProperties
index be6c8895fda5db2e35371a7e90f78e060d7e5266..1c4488eb5e030a7cb28293290fff08fd2e85ec38 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/bottomAir/thermophysicalProperties
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/bottomAir/thermophysicalProperties
@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-thermoType      hPsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
+thermoType      hRhoThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
 
 mixture
 {
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/topAir/thermophysicalProperties b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/topAir/thermophysicalProperties
index 972acfc40c53c7c807e63079092c3db82c4206ba..7f67791ae58ab8bd27e9dcb06a5dd7e7528cc8c0 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/topAir/thermophysicalProperties
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeater/constant/topAir/thermophysicalProperties
@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-thermoType      hPsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
+thermoType      hRhoThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>;
 
 mixture
 {