diff --git a/ohmpi/hardware_components/ohmpi_card_3_15.py b/ohmpi/hardware_components/ohmpi_card_3_15.py
index 4c75189879cebb45d7160d3e2cf006ccd92a946e..fd2232f5a6264a352cc47e8e05aa1c8de21a73bd 100644
--- a/ohmpi/hardware_components/ohmpi_card_3_15.py
+++ b/ohmpi/hardware_components/ohmpi_card_3_15.py
@@ -208,7 +208,7 @@ class Rx(RxAbstract):
             self.ctl = ctl_module.Ctl()
         elif isinstance(self.ctl, dict):
             print(ctl_module)
-            self.ctl = ctl_module.Ctl(self.ctl)
+            self.ctl = ctl_module.Ctl(**self.ctl)
         print(f'ctl: {self.ctl}, {type(self.ctl)}')  # TODO: delete me!
         # ADS1115 for voltage measurement (MN)
         self._ads_voltage_address = 0x49