diff --git a/src/lagrangian/cfdemParticle/subModels/chemistryModel/diffusionCoefficients/diffusionCoefficients.C b/src/lagrangian/cfdemParticle/subModels/chemistryModel/diffusionCoefficients/diffusionCoefficients.C
index c2157536..9ce61c26 100644
--- a/src/lagrangian/cfdemParticle/subModels/chemistryModel/diffusionCoefficients/diffusionCoefficients.C
+++ b/src/lagrangian/cfdemParticle/subModels/chemistryModel/diffusionCoefficients/diffusionCoefficients.C
@@ -166,7 +166,7 @@ void diffusionCoefficient::execute()
     scalar dBinary_(0);
     scalar Xnegative(0);
 
-    List<scalar> TotalFraction_(diffusantGasNames_.size(),0);
+    List<scalar> TotalFraction_(diffusantGasNames_.size(),Zero);
 
     // defining interpolators for T and Pressure
     interpolationCellPoint <scalar> TInterpolator_(tempField_);