diff --git a/src/thermophysicalModels/basicSolidThermo/solidMixtureThermo/mixtures/multiComponentSolidMixture/multiComponentSolidMixture.C b/src/thermophysicalModels/basicSolidThermo/solidMixtureThermo/mixtures/multiComponentSolidMixture/multiComponentSolidMixture.C
index f43f4866b9..b9cfca7a1a 100644
--- a/src/thermophysicalModels/basicSolidThermo/solidMixtureThermo/mixtures/multiComponentSolidMixture/multiComponentSolidMixture.C
+++ b/src/thermophysicalModels/basicSolidThermo/solidMixtureThermo/mixtures/multiComponentSolidMixture/multiComponentSolidMixture.C
@@ -30,7 +30,7 @@ License
 template<class ThermoSolidType>
 void Foam::multiComponentSolidMixture<ThermoSolidType>::correctMassFractions()
 {
-    volScalarField Yt = Y_[0];
+    volScalarField Yt("Yt", Y_[0]);
 
     for (label n=1; n<Y_.size(); n++)
     {
diff --git a/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C b/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C
index 63dc458e0a..3adf2299ba 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C
+++ b/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C
@@ -49,7 +49,7 @@ const ThermoType& Foam::multiComponentMixture<ThermoType>::constructSpeciesData
 template<class ThermoType>
 void Foam::multiComponentMixture<ThermoType>::correctMassFractions()
 {
-    volScalarField Yt = Y_[0];
+    volScalarField Yt("Yt", Y_[0]);
 
     for (label n=1; n<Y_.size(); n++)
     {