diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.H b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.H
index c9d1d6d51f14124b863ca2241956cc0138354ec9..f823eb6fa79ee6f1c4913e90b81cd7554c824a70 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.H
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.H
@@ -122,8 +122,8 @@ public:
         //- Operation mode enumeration
         enum operationMode
         {
-            fixedPower,                 //!< Fixed heat flux
-            fixedHeatFlux,              //!< Fixed heat flux
+            fixedPower,                 //!< Fixed heat power [W]
+            fixedHeatFlux,              //!< Fixed heat flux [W/m2]
             fixedHeatTransferCoeff,     //!< Fixed heat transfer coefficient
         };