diff --git a/tutorials/combustion/LTSReactingFoam/ras/counterFlowFlame2D/constant/chemistryProperties b/tutorials/combustion/LTSReactingFoam/ras/counterFlowFlame2D/constant/chemistryProperties
index 0fc57b4bba..93d33d5232 100644
--- a/tutorials/combustion/LTSReactingFoam/ras/counterFlowFlame2D/constant/chemistryProperties
+++ b/tutorials/combustion/LTSReactingFoam/ras/counterFlowFlame2D/constant/chemistryProperties
@@ -17,7 +17,7 @@ FoamFile
 
 chemistryType
 {
-    chemistrySolver   ode;
+    chemistrySolver   EulerImplicit;
     chemistryThermo   psi;
 }
 
diff --git a/tutorials/combustion/chemFoam/gri/constant/chemistryProperties b/tutorials/combustion/chemFoam/gri/constant/chemistryProperties
index 50c50759d3..e65509f396 100644
--- a/tutorials/combustion/chemFoam/gri/constant/chemistryProperties
+++ b/tutorials/combustion/chemFoam/gri/constant/chemistryProperties
@@ -33,9 +33,9 @@ EulerImplicitCoeffs
 
 odeCoeffs
 {
-    solver          SIBS;
+    solver          Rosenbrock43;
     absTol          1e-12;
-    relTol          1e-4;
+    relTol          1e-2;
 }