diff --git a/squirrelbattle/display/messagedisplay.py b/squirrelbattle/display/messagedisplay.py
index 34c6586..9e4ffae 100644
--- a/squirrelbattle/display/messagedisplay.py
+++ b/squirrelbattle/display/messagedisplay.py
@@ -5,6 +5,10 @@ from squirrelbattle.display.display import Box, Display
 
 
 class MessageDisplay(Display):
+    """
+    Display a message in a popup.
+    """
+
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
diff --git a/squirrelbattle/game.py b/squirrelbattle/game.py
index 4553392..4eb38c1 100644
--- a/squirrelbattle/game.py
+++ b/squirrelbattle/game.py
@@ -72,6 +72,10 @@ class Game:
         Indicates what should be done when the given key is pressed,
         according to the current game state.
         """
+        if self.message:
+            self.message = None
+            return
+
         if self.state == GameMode.PLAY:
             self.handle_key_pressed_play(key)
         elif self.state == GameMode.MAINMENU: