diff --git a/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C b/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C
index 5216838fa1..7d740ba875 100644
--- a/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C
+++ b/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C
@@ -106,10 +106,10 @@ diffusionMulticomponent<CombThermoType, ThermoType>::init()
         const List<specieCoeffs>& rhs = reactions_[k].rhs();
 
         const label fuelIndex = species[fuelNames_[k]];
-        const label oxydantIndex = species[oxidantNames_[k]];
+        const label oxidantIndex = species[oxidantNames_[k]];
 
         const scalar Wu = specieThermo_[fuelIndex].W();
-        const scalar Wox = specieThermo_[oxydantIndex].W();
+        const scalar Wox = specieThermo_[oxidantIndex].W();
 
         forAll(lhs, i)
         {
@@ -130,7 +130,7 @@ diffusionMulticomponent<CombThermoType, ThermoType>::init()
         Info << "Fuel heat of combustion : " << qFuel_[k] << endl;
 
         s_[k] =
-            (Wox*mag(specieStoichCoeffs[oxydantIndex]))
+            (Wox*mag(specieStoichCoeffs[oxidantIndex]))
           / (Wu*mag(specieStoichCoeffs[fuelIndex]));
 
         Info << "stoichiometric oxygen-fuel ratio : " << s_[k] << endl;
@@ -169,7 +169,7 @@ diffusionMulticomponent
     RijPtr_(reactions_.size()),
     Ci_(reactions_.size(), 1.0),
     fuelNames_(this->coeffs().lookup("fuels")),
-    oxidantNames_(this->coeffs().lookup("oxydants")),
+    oxidantNames_(this->coeffs().lookup("oxidants")),
     qFuel_(reactions_.size()),
     stoicRatio_(reactions_.size()),
     s_(reactions_.size()),
@@ -275,13 +275,13 @@ diffusionMulticomponent<CombThermoType, ThermoType>::correct()
         for (label k=0; k < nReactions; k++)
         {
             const label fuelIndex = species[fuelNames_[k]];
-            const label oxydantIndex = species[oxidantNames_[k]];
+            const label oxidantIndex = species[oxidantNames_[k]];
 
             const volScalarField& Yfuel =
                 this->thermo().composition().Y(fuelIndex);
 
             const volScalarField& Yox =
-                this->thermo().composition().Y(oxydantIndex);
+                this->thermo().composition().Y(oxidantIndex);
 
             const volScalarField ft
             (
diff --git a/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.H b/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.H
index 54559b120a..e859e8e4bb 100644
--- a/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.H
+++ b/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.H
@@ -35,14 +35,15 @@ Description
 
     where:
 
-    D :     is a model constant.
-    muEff : is the effective turbulent diffusivity
-    prob :  is a Gaussian shaped distribution around the stoichiometric value
-            of each reaction. The distribtion has the input parameter 'sigma'
-            for standard deviation.
+    D :     is a model dynamic constant defined as C*f02 where:
+            C is a model constant
+            f02 = 1  + sqr(O2/oxidantRes), oxidantRes is an user input
 
-    The variable prob is multiplied by the factor: 1  + pow2(O2/oxidantRes),
-    where oxidantRes is the residual oxydant specified for each reaction.
+    muEff : is the effective turbulent viscosity
+    prob :  is a normalized Gaussian shaped distribution around the stoichiometric
+            value of each reaction. The distribtion is controled by 'sigma'
+            for standard deviation and ftCorr for correction of the stoichiometric
+            value.
 
     In the combustion properties dictionary:
 
@@ -50,7 +51,7 @@ Description
     {
         Ci          (1.0 1.0);      // Default to 1
         fuels       (CH4 CO);
-        oxydants    (O2 O2);
+        oxidants    (O2 O2);
         YoxStream   (0.23 0.23);    // Default to 0.23
         YfStream    (1.0 1.0);      // Default to 1.0
         sigma       (0.02 0.02);    // Default to 0.02
@@ -59,13 +60,6 @@ Description
         laminarIgn  false;          // Default false
     }
 
-    ftCorr is used to shift the location of the flame and corrects the
-    stochimetric mixture value when the mesh resolution is not enough
-    to resolve the combustion zone.
-
-    NOTE: Optionally the switch 'laminarIgn' can be used to ignite the mixture
-    using laminar combustion.
-
 
 SourceFiles
     diffusionMulticomponent.C
@@ -112,7 +106,7 @@ class diffusionMulticomponent
         //- List of fuels for each reaction
         wordList fuelNames_;
 
-        //- List of oxydants for each reaction
+        //- List of oxidants for each reaction
         wordList oxidantNames_;
 
         //- Heat of combustion [J/Kg]