diff --git a/nmigen/compat/fhdl/module.py b/nmigen/compat/fhdl/module.py
index 43ca8fb..f4622b0 100644
--- a/nmigen/compat/fhdl/module.py
+++ b/nmigen/compat/fhdl/module.py
@@ -95,6 +95,8 @@ class _CompatModuleClockDomains(_CompatModuleProxy):
 
 
 class CompatModule(ir.Elaboratable):
+    _Elaboratable__silence = True
+
     # Actually returns nmigen.fhdl.Module, not a Fragment.
     def get_fragment(self):
         assert not self.get_fragment_called