diff --git a/houdini/penguin.py b/houdini/penguin.py
index c7f5df0..b891086 100644
--- a/houdini/penguin.py
+++ b/houdini/penguin.py
@@ -193,15 +193,15 @@ class Penguin(Spheniscidae, penguin.Penguin):
 
         return True
 
-    async def add_card(self, card, quantity=1, member_quantity=0):
+    async def add_card(self, card, quantity=0, member_quantity=0):
         if card.id in self.cards:
             penguin_card = self.cards[card.id]
 
             await penguin_card.update(
                 quantity=penguin_card.quantity + quantity,
-                member_quantity=member_quantity).apply()
+                member_quantity=penguin_card.member_quantity + member_quantity).apply()
         else:
-            await self.cards.insert(card_id=card.id)
+            await self.cards.insert(card_id=card.id, quantity=quantity, member_quantity=member_quantity)
 
         self.logger.info(f'{self.username} added \'{card.name}\' to their ninja deck')