diff --git a/gateware/logic/modulate.py b/gateware/logic/modulate.py
index c750306..ffba1b2 100644
--- a/gateware/logic/modulate.py
+++ b/gateware/logic/modulate.py
@@ -45,12 +45,14 @@ class Demodulate(Module, AutoCSR):
             cordic_mode="rotate",
             func_mode="circular",
         )
-        self.comb += [
+        self.sync += [
             # cordic input
             self.cordic.xi.eq(self.x),
             self.cordic.zi.eq(
                 ((self.phase * self.multiplier.storage) + self.delay.storage) << 1
-            ),
+            )
+        ]
+        self.comb += [
             # cordic output
             self.i.eq(self.cordic.xo >> 1),
             self.q.eq(self.cordic.yo >> 1),