diff --git a/src/thermophysicalModels/basic/psiThermo/ePsiThermo/ePsiThermo.H b/src/thermophysicalModels/basic/psiThermo/ePsiThermo/ePsiThermo.H
index 6952edc423..fd3071ff11 100644
--- a/src/thermophysicalModels/basic/psiThermo/ePsiThermo/ePsiThermo.H
+++ b/src/thermophysicalModels/basic/psiThermo/ePsiThermo/ePsiThermo.H
@@ -87,13 +87,13 @@ public:
 
     // Member functions
 
-        //- Return the compostion of the combustion mixture
+        //- Return the compostion of the mixture
         virtual basicMixture& composition()
         {
             return *this;
         }
 
-        //- Return the compostion of the combustion mixture
+        //- Return the compostion of the mixture
         virtual const basicMixture& composition() const
         {
             return *this;
diff --git a/src/thermophysicalModels/basic/psiThermo/hPsiThermo/hPsiThermo.H b/src/thermophysicalModels/basic/psiThermo/hPsiThermo/hPsiThermo.H
index c1d9b513a3..4eae7214a0 100644
--- a/src/thermophysicalModels/basic/psiThermo/hPsiThermo/hPsiThermo.H
+++ b/src/thermophysicalModels/basic/psiThermo/hPsiThermo/hPsiThermo.H
@@ -87,13 +87,13 @@ public:
 
     // Member functions
 
-        //- Return the compostion of the combustion mixture
+        //- Return the compostion of the mixture
         virtual basicMixture& composition()
         {
             return *this;
         }
 
-        //- Return the compostion of the combustion mixture
+        //- Return the compostion of the mixture
         virtual const basicMixture& composition() const
         {
             return *this;