diff --git a/daemon/container.go b/daemon/container.go
index 20b86f7e20..647f4c187d 100644
--- a/daemon/container.go
+++ b/daemon/container.go
@@ -673,6 +673,8 @@ func (container *Container) Mount() error {
 }
 
 func (container *Container) Changes() ([]archive.Change, error) {
+	container.Lock()
+	defer container.Unlock()
 	return container.daemon.Changes(container)
 }