diff --git a/src/thermophysicalModels/specie/thermo/hConst/hConstThermo.H b/src/thermophysicalModels/specie/thermo/hConst/hConstThermo.H
index 3f49a243b9..d9b05dbc48 100644
--- a/src/thermophysicalModels/specie/thermo/hConst/hConstThermo.H
+++ b/src/thermophysicalModels/specie/thermo/hConst/hConstThermo.H
@@ -83,7 +83,7 @@ inline hConstThermo<EquationOfState> operator*
 );
 
 template<class EquationOfState>
-inline hConstThermo<EquationOfState> operator====
+inline hConstThermo<EquationOfState> operator==
 (
     const hConstThermo<EquationOfState>&,
     const hConstThermo<EquationOfState>&
diff --git a/src/thermophysicalModels/specie/transport/sutherland/sutherlandTransport.H b/src/thermophysicalModels/specie/transport/sutherland/sutherlandTransport.H
index 188a5a18c9..e20e97b914 100644
--- a/src/thermophysicalModels/specie/transport/sutherland/sutherlandTransport.H
+++ b/src/thermophysicalModels/specie/transport/sutherland/sutherlandTransport.H
@@ -178,7 +178,7 @@ public:
 
     // Member Operators
 
-        inline void operator+===(const sutherlandTransport&);
+        inline void operator+=(const sutherlandTransport&);
         inline void operator*=(const scalar);