diff --git a/migen/fhdl/visit.py b/migen/fhdl/visit.py
index ab7a1b850..386c038bd 100644
--- a/migen/fhdl/visit.py
+++ b/migen/fhdl/visit.py
@@ -197,14 +197,3 @@ class NodeTransformer:
 
 	def visit_unknown(self, node):
 		return node
-
-class TransformModule:
-	def __init__(self, transform, module):
-		self.transform = transform
-		self.module = module
-		self.get_fragment_called = False
-
-	def get_fragment(self):
-		assert(not self.get_fragment_called)
-		self.get_fragment_called = True
-		return self.transform(self.module.get_fragment())