diff --git a/brmbar3/brmbar/Shop.py b/brmbar3/brmbar/Shop.py
index 887984a..b32f5bb 100644
--- a/brmbar3/brmbar/Shop.py
+++ b/brmbar3/brmbar/Shop.py
@@ -186,8 +186,9 @@ class Shop:
         return self.currency.str(-self.credit_balance(overflow=overflow))
 
     def inventory_balance(self):
-        res = self.db.execute_and_fetch("SELECT public.inventory_balance()")
-        logger.debug("inventory_balance res = %s", res)
+        resa = self.db.execute_and_fetch("SELECT * FROM public.inventory_balance()")
+        res = resa[0]
+        logger.debug("inventory_balance resa = %s", resa)
         return res
 
     def inventory_balance_str(self):