diff --git a/client-barcode/freitagslib/commands.py b/client-barcode/freitagslib/commands.py
index 333ead8..f986c40 100644
--- a/client-barcode/freitagslib/commands.py
+++ b/client-barcode/freitagslib/commands.py
@@ -13,7 +13,7 @@ class DepositCommand(object):
 		self._difference = amount
 
 	def difference(self):
-		self._difference
+		return self._difference
 
 	def run(self, user_name):
 		net.deposit(self._difference, net.DEPOSIT_CASH, user_name)