Spring struck his 35-yard shot well, but Vale goalkeeper Joe Anyon looked in control until the ball sped inches inside his left-hand post.

Luton had the best possible start with Polish central defender Jaroslaw Fojut volleying them ahead on three minutes.

But Vale drew level in first-half stoppage time, when Callum Willock steered his shot past Dean Brill.

Port Vale: Anyon, McGregor, Pilkington, Lowe, Talbot, Whitaker, Rocastle (Edwards 78), Hulbert, Salmon (Rodgers 63), Glover, Willock.
Subs Not Used: Martin, Richards, O'Loughlin.

Goals: Willock 45.

Luton: Brill, Perry, Keane, Fojut, Goodall, Bell (Hutchison 90), Edwards, Spring, Currie (McVeigh 88), Talbot (Furlong 86), Andrew.
Subs Not Used: O'Leary, Emanuel.

Booked: Goodall.

Goals: Fojut 3, Spring 90.

Att: 4,224

Ref: Rob Shoebridge (Derbyshire).