diff --git a/daemon/graphdriver/overlay/overlay.go b/daemon/graphdriver/overlay/overlay.go
index 88d6602e07..7f849c96ff 100644
--- a/daemon/graphdriver/overlay/overlay.go
+++ b/daemon/graphdriver/overlay/overlay.go
@@ -404,7 +404,7 @@ func (d *Driver) Put(id string) error {
 	if count := d.ctr.Decrement(mountpoint); count > 0 {
 		return nil
 	}
-	if err := syscall.Unmount(mountpoint, 0); err != nil {
+	if err := syscall.Unmount(mountpoint, syscall.MNT_DETACH); err != nil {
 		logrus.Debugf("Failed to unmount %s overlay: %v", id, err)
 	}
 	return nil
diff --git a/daemon/graphdriver/overlay2/overlay.go b/daemon/graphdriver/overlay2/overlay.go
index e327ec508a..ccb2c3669d 100644
--- a/daemon/graphdriver/overlay2/overlay.go
+++ b/daemon/graphdriver/overlay2/overlay.go
@@ -587,7 +587,7 @@ func (d *Driver) Put(id string) error {
 	if count := d.ctr.Decrement(mountpoint); count > 0 {
 		return nil
 	}
-	if err := syscall.Unmount(mountpoint, 0); err != nil {
+	if err := syscall.Unmount(mountpoint, syscall.MNT_DETACH); err != nil {
 		logrus.Debugf("Failed to unmount %s overlay: %s - %v", id, mountpoint, err)
 	}
 	return nil