diff --git a/assign3.md b/assign3.md
index 5ca5a9de8de173f8ac1636ef0006e859e635d197..774f5e334c647b185c105542b18e1530635813cc 100644
--- a/assign3.md
+++ b/assign3.md
@@ -202,7 +202,7 @@ each button.
 The view controller's `updateViewFromGame()` method is now quite short. It has
 to:
 - add `ButtonTile`s to the board if the model has a previously-unseen `Tile`.
-- remove `ButtonTile`s from the board if a previously-unseen `Tile` no longer
+- remove `ButtonTile`s from the board if a previously-seen `Tile` no longer
   exists. 
 - ensure that all remaining `ButtonTile`s have accurate row/col information.
 - update the score