diff --git a/tutorials/lagrangian/porousExplicitSourceReactingParcelFoam/verticalChannel/0/omega b/tutorials/lagrangian/porousExplicitSourceReactingParcelFoam/verticalChannel/0/omega
index f9b551e72b..0538e96fb7 100644
--- a/tutorials/lagrangian/porousExplicitSourceReactingParcelFoam/verticalChannel/0/omega
+++ b/tutorials/lagrangian/porousExplicitSourceReactingParcelFoam/verticalChannel/0/omega
@@ -41,7 +41,7 @@ boundaryField
         type            compressible::turbulentMixingLengthFrequencyInlet;
         mixingLength    0.007;
         k               k;
-        value           uniform 4.5-3;
+        value           uniform 4.5e-3;
     }
     outlet
     {