diff --git a/lib/chess/game_state.ex b/lib/chess/game_state.ex
index 79b78ce..76fd780 100644
--- a/lib/chess/game_state.ex
+++ b/lib/chess/game_state.ex
@@ -5,6 +5,11 @@ defmodule Chess.GameState do
   alias Chess.Moves
   alias Chess.Moves.Piece
 
+  def game_over?(game) do
+    game.state == "checkmate" ||
+      game.state == "stalemate"
+  end
+
   def state(board, colour) do
     cond do
       player_checkmated?(board, colour) ->
diff --git a/lib/chess/store/game.ex b/lib/chess/store/game.ex
index a412f33..cfa04ce 100644
--- a/lib/chess/store/game.ex
+++ b/lib/chess/store/game.ex
@@ -69,11 +69,6 @@ defmodule Chess.Store.Game do
   end
   def validate_king_in_check(changeset, _, _), do: changeset
 
-  def game_over?(game) do
-    game.state == "checkmate" ||
-      game.state == "stalemate"
-  end
-
   def ordered(query) do
     query
     |> order_by([game], desc: game.inserted_at)
diff --git a/lib/chess_web/views/game_view.ex b/lib/chess_web/views/game_view.ex
index 23a55f7..1ff0ac6 100644
--- a/lib/chess_web/views/game_view.ex
+++ b/lib/chess_web/views/game_view.ex
@@ -2,6 +2,7 @@ defmodule ChessWeb.GameView do
   use ChessWeb, :view
 
   alias Chess.Store.Game
+  alias Chess.GameState
 
   import Chess.Auth, only: [current_user: 1]
 
@@ -12,7 +13,7 @@ defmodule ChessWeb.GameView do
   end
 
   def game_over?(game) do
-    Game.game_over?(game)
+    GameState.game_over?(game)
   end
 
   def state(conn, game) do