diff --git a/applications/solvers/lagrangian/reactingParcelFoam/LTSReactingParcelFoam/setrDeltaT.H b/applications/solvers/lagrangian/reactingParcelFoam/LTSReactingParcelFoam/setrDeltaT.H
index 2a3935fd9..caa9b4167 100644
--- a/applications/solvers/lagrangian/reactingParcelFoam/LTSReactingParcelFoam/setrDeltaT.H
+++ b/applications/solvers/lagrangian/reactingParcelFoam/LTSReactingParcelFoam/setrDeltaT.H
@@ -71,7 +71,6 @@ License
     }
 
     // Reaction source time scale
-    if (alphaTemp < 1.0)
     {
         volScalarField::DimensionedInternalField rDeltaTT
         (
diff --git a/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution b/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution
index e3b19c8ab..99ee73e74 100644
--- a/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution
+++ b/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution
@@ -71,7 +71,7 @@ PIMPLE
     rhoMax          1.5;
 
     maxCo           2.5;
-    rDeltaTSmoothingCoeff 1;
+    rDeltaTSmoothingCoeff 0.5;
     alphaTemp       1;
     maxDeltaT       1;
 }