diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureCoupledBaffleMixed/turbulentTemperatureCoupledBaffleMixedFvPatchScalarField.C b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureCoupledBaffleMixed/turbulentTemperatureCoupledBaffleMixedFvPatchScalarField.C
index 0b891110ad..74da167887 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureCoupledBaffleMixed/turbulentTemperatureCoupledBaffleMixedFvPatchScalarField.C
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureCoupledBaffleMixed/turbulentTemperatureCoupledBaffleMixedFvPatchScalarField.C
@@ -381,9 +381,11 @@ void turbulentTemperatureCoupledBaffleMixedFvPatchScalarField::write
 {
     mixedFvPatchScalarField::write(os);
     os.writeEntry("Tnbr", TnbrName_);
-    thicknessLayers_.writeEntry("thicknessLayers", os);
-    kappaLayers_.writeEntry("kappaLayers", os);
-
+    if (thicknessLayers_.size())
+    {
+        thicknessLayers_.writeEntry("thicknessLayers", os);
+        kappaLayers_.writeEntry("kappaLayers", os);
+    }
     temperatureCoupledBase::write(os);
     mappedPatchFieldBase<scalar>::write(os);
 }
diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
index 102a49304a..6eb362268b 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
@@ -604,10 +604,14 @@ void turbulentTemperatureRadCoupledMixedFvPatchScalarField::write
     os.writeEntry("qr", qrName_);
     os.writeEntry("thermalInertia", thermalInertia_);
 
-    thicknessLayers_.writeEntry("thicknessLayers", os);
-    kappaLayers_.writeEntry("kappaLayers", os);
+    if (thicknessLayers_.size())
+    {
+        thicknessLayers_.writeEntry("thicknessLayers", os);
+        kappaLayers_.writeEntry("kappaLayers", os);
+    }
 
     temperatureCoupledBase::write(os);
+    mappedPatchFieldBase<scalar>::write(os);
 }