diff --git a/migen/fhdl/structure.py b/migen/fhdl/structure.py
index d6eb990a5..fa97b793d 100644
--- a/migen/fhdl/structure.py
+++ b/migen/fhdl/structure.py
@@ -286,7 +286,7 @@ class Instance:
 	def get_io(self, name):
 		for item in self.items:
 			if isinstance(item, Instance._IO) and item.name == name:
-				return item.signal
+				return item.expr
 	
 	def __hash__(self):
 		return id(self)