diff --git a/tutorials/lagrangian/MPPICFoam/cyclone/system/snappyHexMeshDict b/tutorials/lagrangian/MPPICFoam/cyclone/system/snappyHexMeshDict
index 2497646405..edaa68f457 100644
--- a/tutorials/lagrangian/MPPICFoam/cyclone/system/snappyHexMeshDict
+++ b/tutorials/lagrangian/MPPICFoam/cyclone/system/snappyHexMeshDict
@@ -33,13 +33,6 @@ geometry
     {
         type triSurfaceMesh;
         name walls;
-        regions
-        {
-            solid
-            {
-                name walls;
-            }
-        }
     }
 };