diff --git a/daemon/oci_linux.go b/daemon/oci_linux.go
index f8fba2bda8..e30ea08e8c 100644
--- a/daemon/oci_linux.go
+++ b/daemon/oci_linux.go
@@ -198,6 +198,7 @@ func getUser(c *container.Container, username string) (specs.User, error) {
 	}
 	usr.UID = uint32(execUser.Uid)
 	usr.GID = uint32(execUser.Gid)
+	usr.AdditionalGids = []uint32{usr.GID}
 
 	var addGroups []int
 	if len(c.HostConfig.GroupAdd) > 0 {