diff --git a/src/finiteVolume/fvMatrices/fvMatrix/fvMatrix.C b/src/finiteVolume/fvMatrices/fvMatrix/fvMatrix.C
index 74b4282638..5e85f50592 100644
--- a/src/finiteVolume/fvMatrices/fvMatrix/fvMatrix.C
+++ b/src/finiteVolume/fvMatrices/fvMatrix/fvMatrix.C
@@ -227,7 +227,7 @@ Foam::fvMatrix<Type>::fvMatrix
         );
     }
 
-    // Update the boundary coefficients of psi without changing it's event No.
+    // Update the boundary coefficients of psi without changing its event No.
     GeometricField<Type, fvPatchField, volMesh>& psiRef =
        const_cast<GeometricField<Type, fvPatchField, volMesh>&>(psi_);
 
diff --git a/src/lagrangian/molecularDynamics/molecule/interactionLists/referredCell/referredCell.H b/src/lagrangian/molecularDynamics/molecule/interactionLists/referredCell/referredCell.H
index 666b4f9268..cc553de423 100644
--- a/src/lagrangian/molecularDynamics/molecule/interactionLists/referredCell/referredCell.H
+++ b/src/lagrangian/molecularDynamics/molecule/interactionLists/referredCell/referredCell.H
@@ -170,7 +170,7 @@ public:
 
     // Member Functions
 
-        //- Take this referredCell object that has already had it's transform
+        //- Take this referredCell object that has already had its transform
         //  calculated and refer it on again, retaining same source info.
         referredCell reRefer
         (