diff --git a/applications/solvers/combustion/reactingFoam/EEqn.H b/applications/solvers/combustion/reactingFoam/EEqn.H
index 56ddf867e796f60086400e0a8e65125aafe6117e..9267c9a9bef16e0d1af88b81db2df8bba7c2442a 100644
--- a/applications/solvers/combustion/reactingFoam/EEqn.H
+++ b/applications/solvers/combustion/reactingFoam/EEqn.H
@@ -16,7 +16,6 @@
           : -dpdt
         )
       - fvm::laplacian(turbulence->alphaEff(), he)
-//    - fvm::laplacian(turbulence->muEff(), he)  // unit lewis no.
      ==
         reaction->Sh()
       + fvOptions(rho, he)