diff --git a/artiq/coredevice/almazny.py b/artiq/coredevice/almazny.py
index 33aaf6b02..01c8f0428 100644
--- a/artiq/coredevice/almazny.py
+++ b/artiq/coredevice/almazny.py
@@ -1,4 +1,5 @@
 from artiq.language.core import kernel, portable
+from artiq.language.units import us
 
 from numpy import int32
 
@@ -117,11 +118,6 @@ class AlmaznyLegacy:
         )
         delay(100 * us)
 
-    @kernel
-    def _update_all_registers(self):
-        for i in range(4):
-            self._update_register(i)
-
 
 class AlmaznyChannel:
     """