diff --git a/amaranth/hdl/ir.py b/amaranth/hdl/ir.py
index bd1c54f..e12d271 100644
--- a/amaranth/hdl/ir.py
+++ b/amaranth/hdl/ir.py
@@ -20,7 +20,7 @@ class UnusedElaboratable(UnusedMustUse):
     _MustUse__silence = True
 
 
-class Elaboratable(MustUse, metaclass=ABCMeta):
+class Elaboratable(MustUse):
     _MustUse__warning = UnusedElaboratable