New Delhi: Actor Ajay Devgn, who turned 43 today, is busy shooting for his upcoming film "Son of Sardar(SOS)" in Patiala. The "Singham" star was in for a surprise when his fans brought him a cake on the sets.

"Thank u for the lovely Birthday wishes!:) and thanks to the fans that surprised me with a huge cake on #SOS sets, the whole unit enjoyed it!" Devgn posted on his Twitter page.

"Son Of Sardar" is directed by Ashwani Dhir and also stars Juhi Chawla, Sanjay Dutt and Sonakshi Sinha. The actor, who has two kids with wife Kajol, has three films lined up for release this year including "Tezz" and "Bol Bachchan".