diff --git a/appl/lecture/msm/mcwhorter/mcwhorter_spatialparams.hh b/appl/lecture/msm/mcwhorter/mcwhorter_spatialparams.hh
index 657368f2688c4f38497affd15eb790f4ef12d3fb..94a68af8f7c0f938e56e8d2d7317d337dab6a512 100644
--- a/appl/lecture/msm/mcwhorter/mcwhorter_spatialparams.hh
+++ b/appl/lecture/msm/mcwhorter/mcwhorter_spatialparams.hh
@@ -92,7 +92,7 @@ public:
 //        // entry pressures
         materialLawParams_.setPe(interfaceSoilProps.ISP_BrooksCoreyEntryPressure);
 //        // Brooks-Corey shape parameters
-        materialLawParams_.setAlpha(interfaceSoilProps.ISP_BrooksCoreyLambda);
+        materialLawParams_.setLambda(interfaceSoilProps.ISP_BrooksCoreyLambda);
 
         // parameters for the linear
         // entry pressures function