diff --git a/tutorials/multiphase/overInterDyMFoam/floatingBody/background/system/fvSchemes b/tutorials/multiphase/overInterDyMFoam/floatingBody/background/system/fvSchemes
index a7cd9fea3a..9c0e331c99 100644
--- a/tutorials/multiphase/overInterDyMFoam/floatingBody/background/system/fvSchemes
+++ b/tutorials/multiphase/overInterDyMFoam/floatingBody/background/system/fvSchemes
@@ -57,6 +57,11 @@ oversetInterpolation
     method          inverseDistance;
 }
 
+oversetInterpolationRequired
+{
+    alpha.water;
+}
+
 fluxRequired
 {
     default         no;