diff --git a/tutorials/incompressibleVoF/DTCHull/system/functions b/tutorials/incompressibleVoF/DTCHull/system/functions
index 3321a759fb..ad16ce4d09 100644
--- a/tutorials/incompressibleVoF/DTCHull/system/functions
+++ b/tutorials/incompressibleVoF/DTCHull/system/functions
@@ -14,15 +14,15 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-rigidBodyForces
+forces
 {
-    type            rigidBodyForces;
-    libs            ("librigidBodyForces.so");
-    body            hull;
+    type            forces;
+    libs            ("libforces.so");
     patches         (hull);
     log             on;
     writeControl    timeStep;
     writeInterval   1;
+    CofR            (2.929541 0 0.2);
 }
 
 // ************************************************************************* //