diff --git a/rpi/models/game.py b/rpi/models/game.py
index dbbcd87b..05af95aa 100644
--- a/rpi/models/game.py
+++ b/rpi/models/game.py
@@ -17,6 +17,7 @@ class Game:
         self.add_move(self._base_fen)
 
     def add_move(self, fen : str):
+        if fen is None : return
         self._moves.append(fen)
 
     def to_dict(self):