diff --git a/src/thermophysicalModels/basic/heThermo/heThermo.H b/src/thermophysicalModels/basic/heThermo/heThermo.H
index 2ae99b52..a5e93d74 100644
--- a/src/thermophysicalModels/basic/heThermo/heThermo.H
+++ b/src/thermophysicalModels/basic/heThermo/heThermo.H
@@ -58,6 +58,8 @@ protected:
 
         //- Energy field
         volScalarField he_;
+
+        //- Charge field
         volScalarField qc_;
 
 
@@ -153,16 +155,16 @@ public:
             }
 
 
-        // Access to thermodynamic state variables
+        // Access to electric charge variables
 
-            //- Enthalpy/Internal energy [J/kg]
+            //- Specific charge [C/kg]
             //  Non-const access allowed for transport equations
             virtual volScalarField& qc()
             {
                 return qc_;
             }
 
-            //- Enthalpy/Internal energy [J/kg]
+            //- Specific charge [C/kg]
             virtual const volScalarField& qc() const
             {
                 return qc_;