diff --git a/tutorials/multiphase/interFoam/RAS/planningHullW3/Allrun b/tutorials/multiphase/interFoam/RAS/planningHullW3/Allrun
index 5d27c31ce3..f48960e5f5 100755
--- a/tutorials/multiphase/interFoam/RAS/planningHullW3/Allrun
+++ b/tutorials/multiphase/interFoam/RAS/planningHullW3/Allrun
@@ -36,6 +36,7 @@ do
         usage
         ;;
     -test)
+        shift
         ;;
     -*)
         usage "Invalid option '$1'"