diff --git a/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/constant/reactions b/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/constant/reactions
index a97d6d6c18..478bb46642 100644
--- a/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/constant/reactions
+++ b/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/constant/reactions
@@ -18,7 +18,3 @@ reactions
     }
 }
 
-//    irreversibleArrheniusReaction
-//    CH4 + 2O2 = CO2 + 2H2O
-//    (5.2e16 0  14906)
-//);