diff --git a/tutorials/mesh/moveDynamicMesh/SnakeRiverCanyon/constant/polyMesh/blockMeshDict b/tutorials/mesh/moveDynamicMesh/SnakeRiverCanyon/constant/polyMesh/blockMeshDict
index e87f696658..fedb6ff28a 100644
--- a/tutorials/mesh/moveDynamicMesh/SnakeRiverCanyon/constant/polyMesh/blockMeshDict
+++ b/tutorials/mesh/moveDynamicMesh/SnakeRiverCanyon/constant/polyMesh/blockMeshDict
@@ -31,8 +31,8 @@ vertices
 
 blocks
 (
-//    hex (0 1 2 3 4 5 6 7) (20 60 60) simpleGrading (10.0 1 1)
-    hex (0 1 2 3 4 5 6 7) (6 6 6) simpleGrading (10.0 1 1)
+    hex (0 1 2 3 4 5 6 7) (20 60 60) simpleGrading (10.0 1 1)
+//    hex (0 1 2 3 4 5 6 7) (6 6 6) simpleGrading (10.0 1 1)
 );
 
 edges