diff --git a/mutable/demo/demo.view.tree b/mutable/demo/demo.view.tree
index 1744bcd3c89..7f36355120f 100644
--- a/mutable/demo/demo.view.tree
+++ b/mutable/demo/demo.view.tree
@@ -10,5 +10,5 @@ $mol_mutable_demo $mol_example_code
 		\
 		\const next = mut()
 	aspects /
-		\Muttable
+		\Mutable
 		\Array