diff --git a/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/kineticTheoryModel/kineticTheoryModel.H b/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/kineticTheoryModel/kineticTheoryModel.H
index 8b7a3e145c..a17c2bb4a0 100644
--- a/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/kineticTheoryModel/kineticTheoryModel.H
+++ b/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/kineticTheoryModel/kineticTheoryModel.H
@@ -178,6 +178,11 @@ public:
         {
             return lambda_;
         }
+
+        const volScalarField& kappa() const
+        {
+            return kappa_;
+        }
 };