diff --git a/pkg/willow/willow.go b/pkg/willow/willow.go
index 344c5e5..49c11a1 100644
--- a/pkg/willow/willow.go
+++ b/pkg/willow/willow.go
@@ -110,6 +110,7 @@ func (w *Willow) washer(now time.Time) {
 			continue
 		}
 
-		go file.Flush(buf.FlusOpts{Type: "exp", FollowUp: func() { w.Delete(path) }})
+		go file.Flush(buf.FlusOpts{Type: "exp"})
+		delete(w.memory, path)
 	}
 }