diff --git a/games/convert_price.py b/games/convert_price.py
index de373d2..815b3a0 100644
--- a/games/convert_price.py
+++ b/games/convert_price.py
@@ -4,7 +4,7 @@ from games.models import ExchangeRate, Purchase
 
 # fixme: save preferred currency in user model
 currency_to = "CZK"
-currency_to = currency_to.lower()
+currency_to = currency_to.upper()
 
 
 def save_converted_info(purchase, converted_price, converted_currency):
@@ -22,13 +22,11 @@ def update_converted_prices():
     )
 
     for purchase in purchases:
-        if purchase.price_currency.lower() == currency_to or purchase.price == 0:
-            save_converted_info(
-                purchase, purchase.price, purchase.price_currency.lower()
-            )
+        if purchase.price_currency.upper() == currency_to or purchase.price == 0:
+            save_converted_info(purchase, purchase.price, currency_to)
             continue
         year = purchase.date_purchased.year
-        currency_from = purchase.price_currency.lower()
+        currency_from = purchase.price_currency.upper()
         exchange_rate = ExchangeRate.objects.filter(
             currency_from=currency_from, currency_to=currency_to, year=year
         ).first()