diff --git a/applications/solvers/combustion/dieselFoam/dieselFoam.C b/applications/solvers/combustion/dieselFoam/dieselFoam.C
index 1e6ddfe0c1..6cd29ccca8 100644
--- a/applications/solvers/combustion/dieselFoam/dieselFoam.C
+++ b/applications/solvers/combustion/dieselFoam/dieselFoam.C
@@ -94,6 +94,8 @@ int main(int argc, char *argv[])
             kappa = (runTime.deltaT() + tc)/(runTime.deltaT()+tc+tk);
         }
 
+        chemistrySh = kappa*chemistry.Sh()();
+
         #include "rhoEqn.H"
         #include "UEqn.H"