diff --git a/bind/bind.go b/bind/bind.go
index 3ddf3e6..b8ff22a 100644
--- a/bind/bind.go
+++ b/bind/bind.go
@@ -75,6 +75,7 @@ func listenTo(bind string) (net.Listener, error) {
 				bind, err)
 		}
 		f := os.NewFile(uintptr(fd), bind)
+		defer f.Close()
 		return net.FileListener(f)
 	} else if strings.HasPrefix(bind, "einhorn@") {
 		fd, err := strconv.Atoi(bind[8:])
diff --git a/bind/einhorn.go b/bind/einhorn.go
index 8c11c75..c61e322 100644
--- a/bind/einhorn.go
+++ b/bind/einhorn.go
@@ -65,6 +65,7 @@ func einhornBind(n int) (net.Listener, error) {
 
 	fno := einhornFdMap(n)
 	f := os.NewFile(uintptr(fno), fmt.Sprintf("einhorn@%d", n))
+	defer f.Close()
 	return net.FileListener(f)
 }