diff --git a/gameloop.py b/gameloop.py
index 77bf280..4725496 100644
--- a/gameloop.py
+++ b/gameloop.py
@@ -48,7 +48,7 @@ class Rando:
 		self.message = None
 
 	def num_need_cards(self, num_blanks):
-		return num_blanks - len(self.hand) + self.hand.count(None)
+		return max(num_blanks - len(self.hand) + self.hand.count(None), 0)
 
 	def give_cards(self, cards):
 		self.hand.extend(cards)