@@ -480,7 +480,7 @@ func setMounts(daemon *Daemon, s *specs.Spec, c *container.Container, mounts []c

 		}

 		if m.Source == "tmpfs" {

-			options := []string{"noexec", "nosuid", "nodev", volume.DefaultPropagationMode, "size=65536k"}

+			options := []string{"noexec", "nosuid", "nodev", volume.DefaultPropagationMode}

 			if m.Data != "" {

 				options = append(options, strings.Split(m.Data, ",")...)

 			}

@@ -833,17 +833,19 @@ func (s *DockerSuite) TestRunTmpfsMounts(c *check.C) {

 func (s *DockerSuite) TestRunTmpfsMountsWithOptions(c *check.C) {

 	testRequires(c, DaemonIsLinux)

-	expectedOptions := []string{"rw", "nosuid", "nodev", "noexec", "relatime", "size=65536k"}

+	expectedOptions := []string{"rw", "nosuid", "nodev", "noexec", "relatime"}

 	out, _ := dockerCmd(c, "run", "--tmpfs", "/tmp", "busybox", "sh", "-c", "mount | grep 'tmpfs on /tmp'")

 	for _, option := range expectedOptions {

 		c.Assert(out, checker.Contains, option)

 	}

+	c.Assert(out, checker.Not(checker.Contains), "size=")

-	expectedOptions = []string{"rw", "nosuid", "nodev", "noexec", "relatime", "size=65536k"}

+	expectedOptions = []string{"rw", "nosuid", "nodev", "noexec", "relatime"}

 	out, _ = dockerCmd(c, "run", "--tmpfs", "/tmp:rw", "busybox", "sh", "-c", "mount | grep 'tmpfs on /tmp'")

 	for _, option := range expectedOptions {

 		c.Assert(out, checker.Contains, option)

 	}

+	c.Assert(out, checker.Not(checker.Contains), "size=")

 	expectedOptions = []string{"rw", "nosuid", "nodev", "relatime", "size=8192k"}

 	out, _ = dockerCmd(c, "run", "--tmpfs", "/tmp:rw,exec,size=8192k", "busybox", "sh", "-c", "mount | grep 'tmpfs on /tmp'")