diff --git a/artiq/coredevice/adf5356.py b/artiq/coredevice/adf5356.py
index f2b594dbf..0bffb91be 100644
--- a/artiq/coredevice/adf5356.py
+++ b/artiq/coredevice/adf5356.py
@@ -74,8 +74,8 @@ class ADF5356:
         self._init_registers()
 
     @staticmethod
-    def get_rtio_channels(channel, **kwargs):
-        return [(channel, None)]
+    def get_rtio_channels(**kwargs):
+        return []
 
     @kernel
     def init(self, blind=False):