diff --git a/src/thermophysicalModels/specie/specie/specie.C b/src/thermophysicalModels/specie/specie/specie.C
index 621cd043ab..fa4bea7ca9 100644
--- a/src/thermophysicalModels/specie/specie/specie.C
+++ b/src/thermophysicalModels/specie/specie/specie.C
@@ -38,6 +38,8 @@ const Foam::scalar Foam::specie::Pstd = constant::standard::Pstd.value();
 //- Standard temperature (default in [K])
 const Foam::scalar Foam::specie::Tstd = constant::standard::Tstd.value();
 
+defineTypeNameAndDebug(Foam::specie, 0);
+
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
diff --git a/src/thermophysicalModels/specie/specie/specie.H b/src/thermophysicalModels/specie/specie/specie.H
index 6a64f02198..fd7c69c128 100644
--- a/src/thermophysicalModels/specie/specie/specie.H
+++ b/src/thermophysicalModels/specie/specie/specie.H
@@ -74,6 +74,10 @@ class specie
 
 public:
 
+    //- Runtime type information
+    ClassName("specie");
+
+
     // Public constants
 
         // Thermodynamic constants
diff --git a/src/thermophysicalModels/specie/thermo/janaf/janafThermoI.H b/src/thermophysicalModels/specie/thermo/janaf/janafThermoI.H
index eac1663e11..4e0a5b4ff2 100644
--- a/src/thermophysicalModels/specie/thermo/janaf/janafThermoI.H
+++ b/src/thermophysicalModels/specie/thermo/janaf/janafThermoI.H
@@ -241,7 +241,7 @@ inline void Foam::janafThermo<EquationOfState>::operator+=
     Tlow_ = max(Tlow_, jt.Tlow_);
     Thigh_ = min(Thigh_, jt.Thigh_);
 
-    if (notEqual(Tcommon_, jt.Tcommon_))
+    if (janafThermo<EquationOfState>::debug && notEqual(Tcommon_, jt.Tcommon_))
     {
         FatalErrorIn
         (
@@ -288,7 +288,7 @@ inline void Foam::janafThermo<EquationOfState>::operator-=
     Tlow_ = max(Tlow_, jt.Tlow_);
     Thigh_ = min(Thigh_, jt.Thigh_);
 
-    if (notEqual(Tcommon_, jt.Tcommon_))
+    if (janafThermo<EquationOfState>::debug && notEqual(Tcommon_, jt.Tcommon_))
     {
         FatalErrorIn
         (
@@ -353,7 +353,11 @@ inline Foam::janafThermo<EquationOfState> Foam::operator+
           + molr2*jt2.lowCpCoeffs_[coefLabel];
     }
 
-    if (notEqual(jt1.Tcommon_, jt2.Tcommon_))
+    if
+    (
+        janafThermo<EquationOfState>::debug
+     && notEqual(jt1.Tcommon_, jt2.Tcommon_)
+    )
     {
         FatalErrorIn
         (
@@ -411,7 +415,11 @@ inline Foam::janafThermo<EquationOfState> Foam::operator-
           - molr2*jt2.lowCpCoeffs_[coefLabel];
     }
 
-    if (notEqual(jt1.Tcommon_, jt2.Tcommon_))
+    if
+    (
+        janafThermo<EquationOfState>::debug
+     && notEqual(jt1.Tcommon_, jt2.Tcommon_)
+    )
     {
         FatalErrorIn
         (