diff --git a/applications/solvers/lagrangian/LTSReactingParcelFoam/readTimeControls.H b/applications/solvers/lagrangian/LTSReactingParcelFoam/readTimeControls.H
index 5513848c647124e13a8e6ebbcf4214ce2eda0e05..b73efd593e1bcc40490583f034237dbec2b728ea 100644
--- a/applications/solvers/lagrangian/LTSReactingParcelFoam/readTimeControls.H
+++ b/applications/solvers/lagrangian/LTSReactingParcelFoam/readTimeControls.H
@@ -27,13 +27,16 @@ License
 scalar maxCo(readScalar(pimple.dict().lookup("maxCo")));
 
 // Maximum time scale
-scalar maxDeltaT = readScalar(pimple.dict().lookup("maxDeltaT"));
+scalar maxDeltaT(pimple.dict().lookupOrDefault<scalar>("maxDeltaT", GREAT));
 
 // Smoothing parameter (0-1) when smoothing iterations > 0
-scalar alphaTauSmooth(pimple.dict().lookupOrDefault("alphaTauSmooth", 0.1));
+scalar rDeltaTSmoothingCoeff
+(
+    pimple.dict().lookupOrDefault<scalar>("rDeltaTSmoothingCoeff", 0.1)
+);
 
 // Maximum change in cell temperature per iteration (relative to previous value)
-scalar alphaTauTemp(pimple.dict().lookupOrDefault("alphaTauTemp", 0.05));
+scalar alphaTemp(pimple.dict().lookupOrDefault("alphaTemp", 0.05));
 
 
 // ************************************************************************* //
diff --git a/applications/solvers/lagrangian/LTSReactingParcelFoam/timeScales.H b/applications/solvers/lagrangian/LTSReactingParcelFoam/timeScales.H
index d93b5a40ed0fc18389fd9bad86528657907eed7f..e6d0fa85c4919cb322b30620c2850d408fb0fb8f 100644
--- a/applications/solvers/lagrangian/LTSReactingParcelFoam/timeScales.H
+++ b/applications/solvers/lagrangian/LTSReactingParcelFoam/timeScales.H
@@ -82,7 +82,7 @@ Info<< "Time scales min/max:" << endl;
            /rho
         );
 
-        tau = alphaTauTemp*thermo.Cp()*T/(tau + ROOTVSMALL);
+        tau = alphaTemp*thermo.Cp()*T/(tau + ROOTVSMALL);
 
         Info<< "    Temperature = " << min(maxDeltaT, gMin(tau)) << ", "
             << min(maxDeltaT, gMax(tau)) << endl;
@@ -105,7 +105,7 @@ Info<< "Time scales min/max:" << endl;
 
     // Spatially smooth the time scale field
     // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-    fvc::smooth(rDeltaT, alphaTauSmooth);
+    fvc::smooth(rDeltaT, rDeltaTSmoothingCoeff);
 
     Info<< "    Overall     = " << min(1/rDeltaT).value()
         << ", " << max(1/rDeltaT).value() << nl << endl;
diff --git a/tutorials/lagrangian/LTSReactingParcelFoam/counterFlowFlame2D/system/fvSolution b/tutorials/lagrangian/LTSReactingParcelFoam/counterFlowFlame2D/system/fvSolution
index 69d711902521ece7bad44a33b7afcb1419f64240..aaff31c4c7e8a6d5301e142bcb10eb6273d82e1f 100644
--- a/tutorials/lagrangian/LTSReactingParcelFoam/counterFlowFlame2D/system/fvSolution
+++ b/tutorials/lagrangian/LTSReactingParcelFoam/counterFlowFlame2D/system/fvSolution
@@ -85,8 +85,9 @@ PIMPLE
     rhoMax rhoMax [1 -3 0 0 0] 1.5;
 
     maxCo           0.5;
+    rDeltaTSmoothingCoeff 0.1;
     maxDeltaT       1;
-    alphaTauTemp    0.005;
+    alphaTemp       0.005;
 }
 
 additional
diff --git a/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution b/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution
index b750e0d5e5735db6b82353f9ecd091857b694bef..4dfe0a0beb61e2d751d2038467a8bedf9c5eb3a4 100644
--- a/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution
+++ b/tutorials/lagrangian/LTSReactingParcelFoam/verticalChannel/system/fvSolution
@@ -72,8 +72,8 @@ PIMPLE
     rhoMax rhoMax [1 -3 0 0 0] 1.5;
 
     maxCo           5;
-    alphaTauSmooth  1;
-    alphaTauTemp    1;
+    rDeltaTSmoothingCoeff 1;
+    alphaTemp       1;
     maxDeltaT       1;
 }