diff --git a/migen/actorlib/fifo.py b/migen/actorlib/fifo.py
index 817941c77..78be8200a 100644
--- a/migen/actorlib/fifo.py
+++ b/migen/actorlib/fifo.py
@@ -14,7 +14,7 @@ class _FIFOActor(Module):
 
 		self.comb += [
 			self.sink.ack.eq(self.fifo.writable),
-			self.fifo.we.eq(self.sink.stb & self.sink.ack),
+			self.fifo.we.eq(self.sink.stb),
 			self.fifo.din.eq(self.sink.payload),
 
 			self.source.stb.eq(self.fifo.readable),
@@ -22,7 +22,6 @@ class _FIFOActor(Module):
 			self.fifo.re.eq(self.source.ack)
 		]
 
-
 class SyncFIFO(_FIFOActor):
 	def __init__(self, layout, depth):
 		_FIFOActor.__init__(self, fifo.SyncFIFO, layout, depth)