diff --git a/migen/fhdl/structure.py b/migen/fhdl/structure.py
index 802e1cd2d..6097c2433 100644
--- a/migen/fhdl/structure.py
+++ b/migen/fhdl/structure.py
@@ -19,6 +19,9 @@ class BV:
 		return r
 
 class Value:
+	def __invert__(self):
+		return Operator("~", [self])
+
 	def __add__(self, other):
 		return Operator("+", [self, other])
 	def __radd__(self, other):